Learning Materials
Features
Discover
Chapter 1: Q 110. (page 74)
What are all the values that a standard deviation can possibly take?
(a)
(b)
(c)
(d)
(e) Any number
The correct option is (a)
Over 30 million students worldwide already upgrade their learning with Vaia!
All the tools & learning materials you need for study success - in one app.
Get started for free
Do women study more than men? We asked the students in a large first-year college class how many minutes they studied on a typical weeknight. Here are
the responses of random samples of women and men from the class:
(a) Examine the data. Why are you not surprised that most responses are multiples of 10 minutes? Are there any responses you consider suspicious?
(b) Make a back-to-back stem plot to compare the two samples. Does it appear that women study more than men (or at least claim that they do)? Justify your answer.
You record the age, marital status, and earned income of a sample of 1463 women. The number and type of variables you have recorded is
(a) 3 quantitative, 0 categorical
(b) 4 quantitative, 0 categorical
(c) 3 quantitative, 1 categorical
(d) 2 quantitative, 1 categorical
(e) 2 quantitative, 2 categorical
The audience for movies Here are data on the percent of people in several age groups who attended a movie in the past months:
(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 to years old. Explain why these data do not answer this question.
| Age group | Movie attendence |
| 18 to 24 years | 83% |
| 25 to 34 years | 73% |
| 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% |
The National Survey of Adolescent Health interviewed several thousand teens (grades 7 to 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: Your percent from the previous exercise is part of-
(a) the marginal distribution of gender.
(b) the marginal distribution of opinion about marriage.
(c) the conditional distribution of gender among adolescents with a given opinion.
(d) the conditional distribution of opinion among adolescents of a given gender.
(e) the conditional distribution of “Almost certain” among females.
The solutions also deals with the percentages of email spam and the email failing
What do you think about this solution?
We value your feedback to improve our textbook solutions.
Explanations 
Textbooks 
Exams 
GCSE 
IGCSE 
AS 
A Level 
International A Level 
University Admissions Tests 
Flashcards 
Vaia AI 
Notes 
Study Plans 
Study Sets 
Find a job 
Find a degree 
Student Deals 
Magazine 
Mobile App