9. Education researchers were interested in whether the number of close friends changes between the time students enter college and the beginning of their second year of college. A sample of 12 (entering) first-year students was used to examine the question. Data for this sample are shown below. Number of Friends Number of Friends at the Start of at the Start of First Year Student Second Year A 4 3 13 10 5 E F G H 3 7 J K 6 521422 305423
9. Education researchers were interested in whether the number of close friends changes between the time students enter college and the beginning of their second year of college. A sample of 12 (entering) first-year students was used to examine the question. Data for this sample are shown below. Number of Friends Number of Friends at the Start of at the Start of First Year Student Second Year A 4 3 13 10 5 E F G H 3 7 J K 6 521422 305423
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.6: Summarizing Categorical Data
Problem 21PPS
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Contingency Table
A contingency table can be defined as the visual representation of the relationship between two or more categorical variables that can be evaluated and registered. It is a categorical version of the scatterplot, which is used to investigate the linear relationship between two variables. A contingency table is indeed a type of frequency distribution table that displays two variables at the same time.
Binomial Distribution
Binomial is an algebraic expression of the sum or the difference of two terms. Before knowing about binomial distribution, we must know about the binomial theorem.
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Question
9
Transcribed Image Text:9. Education researchers were interested in whether the number of close friends changes
between the time students enter college and the beginning of their second year of college. A
sample of 12 (entering) first-year students was used to examine the question. Data for this
sample are shown below.
Number of Friends
Number of Friends
Student
at the Start of
at the Start of
First Year
Second Year
A
4
3
3
6
13
10
в
2
1
4
E
F
12
2
3
2
3
5
4
7
K
2
6
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