Answered: Find the correlation coefficient.

Math

Statistics

Find the correlation coefficient.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 23PFA

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Question

An environmentalist wants to determine the relationships between the numbers (in thousands) of forest fires over the year and the number (in hundred thousands) of acres burned. The data for 8 recent years are shown.

Required: Find the correlation coefficient.

Only the final answer should be rounded-off to TWO decimal places.

An environmentalist wants to determine the relationships between the numbers (in
thousands) of forest fires over the year and the number (in hundred thousands) of acres
burned. The data for 8 recent years are shown.
Required: Find the correlation coefficient.
Only the final answer should be rounded-off to TWo decimal places.
Number
72
69
58
47
84
62
53
49
of fires (x)
Number
of acres
62
42
19
26
51
15
27
17
burned (y)

Definition Definition Statistical measure used to assess the strength and direction of relationships between two variables. Correlation coefficients range between -1 and 1. A coefficient value of 0 indicates that there is no relationship between the variables, whereas a -1 or 1 indicates that there is a perfect negative or positive correlation.

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