Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 1: Q. 7 (page 75)

Forty students took a statistics examination having a maximum of 50 points. The score distribution is given in the following stem-and-leaf plot:


The third quartile of the score distribution is equal to (a) 45. (b) 44. (c) 43. (d) 32. (e) 23.

Short Answer

Expert verified

The score distribution's third quartile is 44 i.e option (b)

Step by step solution

01

Given information

Given,

02

Explanation for correct option

The third quartile position will be determined as follows:

Q3=3×404=30th

The third quartile, or the 30th score of the score distribution, is equal to 44, according to the score distribution stem plot.

Hence, option (b) is correct

As a result, the score distribution's third quartile is 44.

03

Explanation for incorrect option

(a) The third quartile of the score distribution will not be equal to 45.

(c) The third quartile of the score distribution will not be equal to 43.

(d) The third quartile of the score distribution will not be equal to 32.

(e) The third quartile of the score distribution will not be equal to23.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

The individuals in this data set are

(a) households. (d) 120 variables.

(b) people. (e) columns.

(c) adults.

The National Survey of Adolescent Health interviewed several thousand teens (grades7to 12). One question asked was “What do you think are the chances you will be married in the next ten years?” Here is a two-way table of the responses by gender:

What percent of those who thought they were almost certain to be married were female?

(a) About 16%(c) About 40% (e) About 61%

(b) About 24% (d) About 45%

Fuel economy (Introduction) Here is a small part of a data set that describes the fuel economy (in miles per gallon) of model year 2009 motor vehicles:

(a) What are the individuals in this data set?

(b) What variables were measured? Identify each as categorical or quantitative.

About 1.6million first-year students enroll in colleges and universities each year. What do they plan to study? The pie chart displays data on the percent of first-year students who plan to major in several discipline areas. About what percent of first-year students plan to major in business? In social science?

The audience for movies Here are data on the percent of people in several age groups who attended a movie in the past 12months:

(a) Display these data in a bar graph. Describe what you see.

(b) Would it be correct to make a pie chart of these data? Why or why not?

(c) A movie studio wants to know what percent of the total audience for movies is 18to 24years old. Explain why these data do not answer this question.

Age groupMovie attendence
18 to 24 years83%
25 to 34 years73%
35 to 44 years
68%
45 to 54 years
60%
55 to 64 years
47%
65 to 74 years
32%
75 to and over
20%
See all solutions

Recommended explanations on Math Textbooks

Probability and Statistics

Read Explanation

Decision Maths

Read Explanation

Geometry

Read Explanation

Discrete Mathematics

Read Explanation

Theoretical and Mathematical Physics

Read Explanation

Mechanics Maths

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free