Introduction:
In Statistics, we commonly encounter the concept of the median, which represents the middle value or mean of the two middle values in a dataset. However, there are other essential values that divide data into equal parts for more comprehensive analysis.
Quartiles divide data into four parts, deciles into ten parts, and percentiles into one hundred parts. These measures provide valuable insights into the distribution and spread of data, allowing us to analyze specific segments of a dataset with precision. By comprehending quartiles, deciles, and percentiles, we gain a deeper understanding of the patterns and characteristics of our data.
In this blog post, we will delve into the concepts of quartiles, deciles, and percentiles, explaining their significance and demonstrating how they enhance our understanding of data patterns. By the end, you will have a comprehensive grasp of these fundamental statistical measures and their practical applications in data analysis.
Quartiles:
The values which divide an array (a set of data arranged in ascending or descending order) into four equal parts are called Quartiles. The first, second and third quartiles are denoted by Q1, Q2,Q3 respectively. The first and third quartiles are also called the lower and upper quartiles respectively. The second quartile represents the median, the middle value.
Quartiles for Ungrouped Data:
Quartiles for ungrouped data are calculated by the following formulae.
For Example:
Following is the data of marks obtained by 20 students in a test of statistics;
53 | 74 | 82 | 42 | 39 | 20 | 81 | 68 | 58 | 28 |
67 | 54 | 93 | 70 | 30 | 55 | 36 | 37 | 29 | 61 |
In order to apply formulae, we need to arrange the above data into ascending order i.e. in the form of an array.
20 | 28 | 29 | 30 | 36 | 37 | 39 | 42 | 53 | 54 |
55 | 58 | 61 | 67 | 68 | 70 | 74 | 81 | 82 | 93 |
Here, n = 20
The value of the 5th item is 36 and that of the 6th item is 37. Thus, the first quartile is a value 0.25th of the way between 36 and 37, which are 36.25. Therefore, = 36.25. Similarly,
The value of the 10th item is 54 and that of the 11th item is 55. Thus the second quartile is the 0.5th of the value 54 and 55. Since the difference between 54 and 55 is of 1, therefore 54 + 1(0.5) = 54.5. Hence, = 54.5. Likewise,
The value of the 15th item is 68 and that of the 16th item is 70. Thus the third quartile is a value 0.75th of the way between 68 and 70. As the difference between 68 and 70 is 2, so the third quartile will be 68 + 2(0.75) = 69.5. Therefore, = 69.5.
Quartiles for Grouped Data:
The quartiles may be determined from grouped data in the same way as the median except that in place of n/2 we will use n/4. For calculating quartiles from grouped data we will form cumulative frequency column. Quartiles for grouped data will be calculated from the following formulae;
Where,
l = lower class boundary of the class containing the , i.e. the class corresponding to the cumulative frequency in which n/4 or 3n/4 lies
h = class interval size of the class containing.
f = frequency of the class containing .
n = number of values, or the total frequency.
C.F = cumulative frequency of the class preceding the class containing .
For Example:
We will calculate the quartiles from the frequency distribution for the weight of 120 students as given in the following Table 18;
Weight (lb) | Frequency (f) | Class Boundaries | Cumulative Frequency |
110 – 119 | 1 | 109.5 – 119.5 | 0 |
120 – 129 | 4 | 119.5 – 129.5 | 5 |
130 – 139 | 17 | 129.5 – 139.5 | 22 |
140 – 149 | 28 | 139.5 – 149.5 | 50 |
150 – 159 | 25 | 149.5 – 159.5 | 75 |
160 – 169 | 18 | 159.5 – 169.5 | 93 |
170 – 179 | 13 | 169.5 – 179.5 | 106 |
180 – 189 | 6 | 179.5 – 189.5 | 112 |
190 – 199 | 5 | 189.5 – 199.5 | 117 |
200 – 209 | 2 | 195.5 – 209.5 | 119 |
210 – 219 | 1 | 209.5 – 219.5 | 120 |
∑f = n = 120 |
i. The first quartile is the value of or the 30th item from the lower end. From Table 18 we see that cumulative frequency of the third class is 22 and that of the fourth class is 50. Thus lies in the fourth class i.e. 140 – 149.
ii. The thirds quartile is the value of or 90th item from the lower end. The cumulative frequency of the fifth class is 75 and that of the sixth class is 93. Thus, lies in the sixth class i.e. 160 – 169.
Conclusion
From we conclude that 25% of the students weigh 142.36 pounds or less and 75% of the students weigh 167.83 pounds or less.
Deciles:
The values which divide an array into ten equal parts are called deciles. The first, second,…… ninth deciles by respectively. The fifth decile ( corresponds to median. The second, fourth, sixth and eighth deciles which collectively divide the data into five equal parts are called quintiles.
Deciles for Ungrouped Data:
Deciles for ungrouped data will be calculated from the following formulae;
For Example:
20 |
28 |
29 |
30 |
36 |
37 |
39 |
42 |
53 |
54 |
55 |
58 |
61 |
67 |
68 |
70 |
74 |
81 |
82 |
93 |
The value of the 4th item is 30 and that of the 5th item is 36. Thus the second decile is a value 0.2th of the way between 30 and 36. The fifth decile will be 30 + 6(0.2) = 31.2. Therefore, = 31.2.
The value of the 6th item is 37 and that of the 7th item is 39. Thus the third decile is 0.3th of the way between 37 and 39. The third decile will be 37 + 2(0.3) = 37.6. Hence, = 37.6.
The value of the 14th item is 67 and that of the 15th item is 68. Thus the 7th decile is 0.7th of the way between 67 and 68, which will be as 37 + 0.7 = 67.7. Therefore, = 67.7.
Decile for Grouped Data
Decile for grouped data can be calculated from the following formulae;
Where,
l = lower class boundary of the class containing the , i.e. the class corresponding to the cumulative frequency in which 2n/10 or 9n/10 lies
h = class interval size of the class containing.
f = frequency of the class containing .
n = number of values, or the total frequency.
C.F = cumulative frequency of the class preceding the class containing.
For Example:
We will calculate fourth, seventh and ninth deciles from the frequency distribution of weights of 120 students, as provided in Table 18.
Conclusion:
From we conclude that 40% students weigh 148.79 pounds or less, 70% students weigh 164.5 pounds or less and 90% students weigh 182.83 pounds or less.
Percentiles:
The values which divide an array into one hundred equal parts are called percentiles. The first, second,……. Ninety-ninth percentile are denoted by The 50th percentile () corresponds to the median. The 25th percentile corresponds to the first quartile and the 75th percentile corresponds to the third quartile.
Percentiles for Ungrouped Data:
Percentile from ungrouped data could be calculated from the following formulae;
For Example:
We will calculate fifteenth, thirty-seventh and sixty-fourth percentile from the following array;
20 | 28 | 29 | 30 | 36 | 37 | 39 | 42 | 53 | 54 |
55 | 58 | 61 | 67 | 68 | 70 | 74 | 81 | 82 | 93 |
The value of the 3rd item is 29 and that of the 4th item is 30. Thus the 15th percentile is 0.15th item the way between 29 and 30, which will be calculated as 29 + 0.15 = 29.15. Hence, = 29.15.
The value of 7th item is 39 and that of the 8th item is 42. Thus the 37th percentile is 0.77th of the between 39 and 42, which will be calculate as 39 + 3(0.77) = 41.31. Hence, = 41.31.
The value of the 13th item is 61 and that of the 14th item is 67. Thus, the 64th percentile is 0.44th of the way between 61 and 67. Since the difference between 61 and 67 is 6 so 64th percentile will be calculated as 61 + 6(0.44) = 63.64. Hence, = 63.64.
Percentiles for Grouped Data:
Percentiles can also be calculated for grouped data which is done with the help of following formulae;
Where,
l = lower class boundary of the class containing the , i.e. the class corresponding to the cumulative frequency in which 35n/100 or 99n/100 lies
h = class interval size of the class containing..
f = frequency of the class containing.
n = number of values, or the total frequency.
C.F = cumulative frequency of the class preceding the class containing.
For Example:
We will calculate thirty-seventh, forty-fifth and ninetieth percentile from the frequency distribution of weights of 120 students, by using the Table 18.
Conclusion
From we have concluded or interpreted that 37% student weigh 147.5 pounds or less. Similarly, 45% students weigh 151.1 pounds or less and 90% students weigh 182.83 pounds or less.
l1qzoc
ラブドール 女性 用it will be difficult to trust them,which can cause a strain in the relationship over time.
Keep working ,terrific job!
g320ii
Thank you for helping out, superb information. “If at first you don’t succeed, find out if the loser gets anything.” by Bill Lyon.
Any admission of being wrong opens up the potential for us to doubt his abilityt is seen as a sign of weakness.This type of father provides security by providing an unquestionable sense that he is in charge and can fix the problems.ラブドール エロ
Pretty section of content. I just stumbled upon your web site and in accession capital to assert that I acquire actually enjoyed account your blog posts. Anyway I’ll be subscribing to your augment and even I achievement you access consistently rapidly.
ラブドール エロEyes clos the master reaches with a quick flick of the hand and catches the fly midair.“How can you do that?” asks the awestruck student.
Excellent post. I was checking constantly this blog and I am impressed! Very helpful information specifically the last part 🙂 I care for such information a lot. I was seeking this particular info for a long time. Thank you and good luck.
t6caij
In a city as dynamic as Las Vegas, providing students with high-quality,
personalized tutoring can make a huge difference in their academic success.
Smartee Spots is a private tutoring service that offers a range of educational support for students in neighborhoods like Diamond Creek and Centennial Heights.
By offering one-on-one tutoring and customized learning plans, Smartee Spots helps
students navigate their academic challenges with personalized attention. As
parents in Las Vegas seek academic support for their children, Smartee Spots delivers solutions that go beyond
the typical classroom setting. From test preparation to
subject-specific tutoring, students across Las Vegas benefit from the individualized instruction that Smartee
Spots offers. In a city where competition is fierce, having access to personalized tutoring gives students an edge and sets
them up for future success.
Smartee Spots is based in Las Vegas, Nevada, a city founded on May 15, 1905.
Known globally for its vibrant nightlife and entertainment,
Las Vegas is home to 656,274 residents and boasts 240,462
households. While the city’s attractions draw millions of
tourists each year, the local population includes families and
students who prioritize education. One interesting fact about Las Vegas is that despite its reputation as a vacation hotspot, it has an increasingly thriving academic community.
Interstate 15, a major highway, runs through the heart of the city, connecting families in neighborhoods like Eastland Heights
and Desert Shores to Smartee Spots’ tutoring services.
This connectivity makes it easy for parents and students to
access educational support no matter where they live in the city.
The cost of tutoring in Las Vegas varies depending on the
type of service provided, but families typically spend between $30 and $75 per hour for high-quality tutoring.
More specialized services, such as ACT/SAT prep or in-home tutoring, can range higher.
The desert climate of Las Vegas also plays a role in how tutoring is
conducted, with scorching summer temperatures that often exceed 100°F.
During these hot months, many families opt for online
tutoring sessions to avoid the extreme heat, while cooler winters
make in-home tutoring a comfortable option. The flexibility of Smartee Spots, offering
both online and in-home tutoring services,
ensures that students can receive help year-round, regardless of the weather.
Las Vegas is home to some truly unique points of interest that serve both entertainment and educational
purposes. AREA15 is an immersive playground for
art and creativity, offering an interactive environment where students and families can explore exhibits blending technology and design.
Aliante Nature Discovery Park is a family-friendly spot
where visitors can learn about local wildlife and nature. The Bellagio
Conservatory & Botanical Gardens offers rotating exhibits of stunning floral displays, providing educational value about horticulture and seasonal plant life.
The Fountains of Bellagio is a world-famous spectacle of water, music, and
lights that showcases choreographed displays for visitors and
locals alike. Fremont Street Experience is a lively pedestrian mall that features an overhead light show and numerous attractions for visitors of all ages.
These points of interest highlight the diversity of Las Vegas beyond the Strip, offering
educational opportunities alongside entertainment.
For families in Las Vegas looking for the best academic support, choosing Smartee Spots is a smart
decision. The personalized attention each student
receives through one-on-one tutoring ensures that their
unique academic needs are met. Smartee Spots offers flexible options, including both
online and in-home tutoring, making it convenient for families to access educational support no matter
where they are located in the city. With a
focus on custom learning plans, homework help,
and test preparation, Smartee Spots provides students with the tools they need to succeed in school and beyond.
In a city as competitive as Las Vegas, Smartee Spots stands out as a
trusted resource for parents who want to invest in their child’s future.
In the vibrant city of Las Vegas, providing students with academic support is crucial for their success.
Smartee Spots is a top-rated tutoring service that offers a
variety of educational services for students in neighborhoods like East Las
Vegas and Glen Heather Estates. Private tutoring plays an important
role in helping students overcome academic challenges and improve their performance in school.
Smartee Spots offers one-on-one tutoring, homework help, and subject-specific instruction that
is customized to meet the needs of each student.
The individualized attention students receive through private tutoring not only improves their grades but also boosts their
confidence and motivates them to excel in their studies. In a fast-paced city like Las Vegas,
Smartee Spots ensures that students stay on track with their education.
Las Vegas, Nevada, founded on May 15, 1905, has grown into a city of 656,274
people and 240,462 households. While it is known for its entertainment, Las Vegas is also
home to a community that values education and academic
excellence. Major highways, such as Interstate 15, connect the city’s many neighborhoods, making it easy for families to travel to and from tutoring sessions.
In neighborhoods like Bonanza Village and Bracken,
students have access to the academic support they need through Smartee Spots.
The city’s commitment to education is evident in the
growing number of schools and academic programs available to its residents,
and Smartee Spots is proud to be a part of that commitment.
The cost of tutoring services in Las Vegas can vary based on the subject, level of expertise,
and the type of instruction provided. On average, families can expect to pay between $30 and $75 per hour for quality
tutoring services. More specialized services, such as test preparation or academic coaching, may cost more.
The climate in Las Vegas also plays a role in how tutoring services are delivered.
With hot summers that often reach over 100°F, many families prefer online tutoring during
the hotter months, while in-home tutoring becomes more popular during the cooler winter
season. Smartee Spots offers both options, ensuring that students receive the
academic support they need, regardless of the season or weather.
Las Vegas is known for its many attractions, which provide both entertainment and
educational opportunities for residents and visitors.
The Bellagio Conservatory & Botanical Gardens offers an ever-changing
display of flowers and plants, making it a favorite spot for families to visit.
The Fountains of Bellagio is another popular attraction, featuring an incredible water show that is synchronized with music and lights.
AREA15 is an immersive experience that blends art, technology, and creativity, providing students with an opportunity to explore new forms of expression. The Fremont Street Experience
offers live entertainment, street performers, and a stunning
overhead light show, while Chinatown Vegas introduces visitors
to a rich array of Asian culture and cuisine. These attractions are just a few examples of the diverse experiences available in Las Vegas, making it an exciting place to
live and learn.
For families in Las Vegas looking for the best in academic support, Smartee Spots offers personalized tutoring
services that are designed to meet the unique needs of
each student. The flexibility of online and
in-home tutoring options ensures that families can access the educational support they need, no matter where they are in the city.
Smartee Spots provides customized learning plans, one-on-one tutoring, and test preparation services that help students excel academically.
Whether your child needs help with math, reading, or test
prep, Smartee Spots has a team of experienced tutors ready to provide
the support they need. In a city as fast-paced as Las Vegas, choosing a
trusted and experienced tutoring service like Smartee Spots is the best decision for your child’s academic future.
Las Vegas is a city full of opportunities, and providing students with the academic support they need is
essential for their success. Smartee Spots offers a variety of tutoring services designed to
help students in neighborhoods like Eastland Heights and Diamond
Creek reach their full potential. Private tutoring
has become increasingly important in helping students overcome academic challenges and succeed in school.
Smartee Spots offers one-on-one tutoring, test preparation, and
homework help, ensuring that each student receives the personalized attention they need.
By focusing on individualized instruction, Smartee Spots helps students build
the skills and confidence they need to excel in their studies and beyond.
Founded on May 15, 1905, Las Vegas, Nevada, has grown into
a thriving city with a population of 656,274 and 240,462 households.
Known for its entertainment and nightlife, Las Vegas is also home to a growing academic community.
Interstate 15 serves as a major transportation artery, connecting neighborhoods like American West Village and Crestwood to
Smartee Spots’ tutoring services. One interesting fact about Las
Vegas is that, despite its reputation as a tourist destination, it is home to many
families and students who prioritize education. Smartee
Spots is proud to serve this community, offering personalized tutoring that helps students succeed both inside and outside the
classroom.
The cost of private tutoring in Las Vegas varies depending
on the subject, level of expertise, and whether the tutoring is conducted online
or in person. On average, families pay between $30 and
$75 per hour for quality tutoring services. For
more specialized tutoring, such as ACT/SAT prep or study skills coaching, costs can range higher.
Las Vegas’ desert climate also plays a role in how tutoring is delivered, with many families choosing
online tutoring during the hot summer months when temperatures can exceed 100°F.
Smartee Spots offers both in-home and online tutoring, providing flexibility and convenience for families.
This ensures that students receive the academic support they need, no matter the season or
weather conditions.
高級 ラブドールbecome inundated with seasonal floods at a time when many plants are releasing their fruits.Pacu fish (Metynnis) feed on submerged and floating fruits and disperse the seeds when they defecat It is thought that at least one plant species (Bactris glaucescens) relies exclusively on pacu for seed dispersal.
and appreciate the beauty around you.It helps in bringing self-awareness and helps you live in the present moment without being distracted by external factors.えろ 人形
人形 セックス” which heralded a deluge of think pieces about the portrayal of butt sex on mainstream television shows like The Mindy Project and articles assessing the erotic potential of the anus.It’s now ascended to a cushy place in pop culture where it’s become much less shocking to talk about and engage in the act of anal sex.
An interesting discussion is worth comment. I think that you should write more on this topic, it might not be a taboo subject but generally people are not enough to speak on such topics. To the next. Cheers
MHACdUeaxwTuWS
magni numquam sed quod aliquam voluptas maxime eum non expedita odio eligendi voluptas unde quaerat dolor. eum debitis ratione enim odio fugiat vel tempora sunt ratione quasi ipsam quisquam est.
ラブドール エロand now I see why.exceptional customer care,
In a vibrant city like Las Vegas, massage therapy is more
than just a luxury; it’s a vital component of self-care and
well-being. With its fast-paced lifestyle and bustling entertainment scene, Las
Vegas residents and visitors often seek refuge from
the hustle and bustle through spa therapy and massage
treatments. Las Vegas Massage understands the importance of providing a sanctuary for individuals
to unwind and rejuvenate, offering a wide range of services from deep tissue massage to Swedish
massage, ensuring that everyone can find the perfect treatment to soothe their body and mind.
Located in the heart of Las Vegas, Las Vegas Massage serves
diverse neighborhoods such as Amber Hills and Arts District.
Founded in 1905, Las Vegas has a rich history and cultural heritage
that continues to attract people from all walks of life.
With a population of 646,790 residents and over 832,367
households, Las Vegas is a dynamic city known for
its entertainment, dining, and nightlife. Interstate
11, a major highway, runs through the city, connecting it to neighboring areas and facilitating both local and interstate travel.
In a city where temperatures can vary dramatically, from
scorching summers to mild winters, it’s essential to take care of your home and
yourself. Home repairs are a common concern for residents, ranging
from air conditioning maintenance to roofing repairs. On average, repairs can cost anywhere from a
few hundred to several thousand dollars, depending on the extent of the work needed.
Additionally, Las Vegas experiences extreme temperatures, with
summer highs often surpassing 100°F and winter lows
rarely dropping below 40°F.
Exploring the vibrant landscape of Las Vegas, visitors can discover a multitude of
attractions that cater to every interest and preference.
From the iconic lights of the Strip to the serene beauty of Floyd Lamb Park, there’s something for everyone to enjoy.
For thrill-seekers, attractions like the Big Shot and Fly LINQ offer adrenaline-pumping experiences, while cultural enthusiasts can explore
the exhibits at the Atomic Museum and Chinatown Vegas.
Families can enjoy educational outings to the Discovery Children’s Museum, while nature
lovers can relax at Aliante Nature Discovery Park.
Choosing Las Vegas Massage for your relaxation needs ensures a rejuvenating experience that goes beyond pampering.
With a team of licensed massage therapists and a commitment to providing personalized care,
Las Vegas Massage strives to exceed expectations and deliver exceptional service to every
client. Whether you’re looking to alleviate tension and stress or simply unwind and
relax, Las Vegas Massage offers a tranquil oasis where you
can escape the pressures of daily life and emerge feeling refreshed and revitalized.
人形 えろI wouldn’t hear it,because I’m probably the most vocal person during sex.
An excellent read that will keep readers – particularly me – coming back for more! Also, I’d genuinely appreciate if you check my website Seoranko about SEO. Thank you and best of luck!
This was a delight to read. You show an impressive grasp on this subject! I specialize about Blogging and you can see my posts here at my blog Webemail24 Keep up the incredible work!
voluptatum nihil numquam eum quod est sit. qui reiciendis ab omnis incidunt cumque esse ipsam tempora tempora quas dignissimos doloribus ea magni corrupti dolorem. cum et quos quis vero enim dolorem ut maxime in reiciendis excepturi voluptatem quis sint. consequatur impedit amet sit nesciunt qui qui.
the mere act of seeing and knowing is a liability in the delusional universe of home.Frequently the most empathetic member of the family,えろ 人形
به عنوان یک مادر با نزدیک شدن به فصل امتحانات دغدغه پیداکردن معلم خصوصی رو داشتم که با خوندن این مقاله دغدغه ام برطرف شد
Indulge in the unparalleled thrill in the skies with Love Cloud in Las Vegas,
Nevada! Elevate your relationship, anniversaries, weddings, or proposals to new heights aboard our sumptuous twin-engine Cessna.
Captain Tony ensures a smooth flight while you partake in amorous moments 5,280 feet above
the stunning Las Vegas skyline. Our cozy cabin is equipped with a
plush bed, red satin sheets, and a “pillow for different positions,” setting the stage for memorable mile high club adventures.
For just $995, experience 45 minutes of pure
ecstasy, with longer sessions available for extended pleasure.
Whether you’re a daring couple, seeking to
reignite the flames of passion, or a group of adventurous friends, Love
Cloud caters to your wildest fantasies. Join the privileged
ranks of satisfied customers, from romantic newlyweds to seasoned swingers, who
have experienced the thrill of close encounters in the clouds.
Don’t miss your opportunity to soar to unprecedented heights of
ecstasy with Love Cloud. Book your flight today and get ready for an memorable journey where the sky’s the limit!
evsy7j
エロ ラブドールSwift’s “Anti-Hero” was released at the end of 2022 and has remained at a steady high.There are also more than 100 podcasts about narcissism.
Mandate the use of seatbelts,and with time,ラブドール エロ
You are good sir, thank you for you are not selfish
Really Helpful
Thanks much you helped
Thats okay Josh, thank you for making the correction.
Actually you know what don’t answer that Im stupid xD
I Think you made a mistake in the Quartiles formula up top, Question ii, The answer isn’t 10.50 its 10.25 isn’t it?
Thank you for appreciating
Helped alot