A researcher for a company selling headphones conducts an experiment to determine whether there is correlation between the number of adverts posted via Twitter and number of head- phones sold. The data recorded over 6 months is shown below Month January February March April May June Number of Tweets posted Number of headphones sold 31 15 42 51 60 29 250 170 302 350 415 255 A regression line for the above table is of the form y = A+ Bx. The correlation coefficient is represented by r. If there was no relationship between the number of tweets posted and the number of head- phones sold which of the following would be true? А. А — 0 В. х — 0 C. r = 0 D. y = 0
A researcher for a company selling headphones conducts an experiment to determine whether there is correlation between the number of adverts posted via Twitter and number of head- phones sold. The data recorded over 6 months is shown below Month January February March April May June Number of Tweets posted Number of headphones sold 31 15 42 51 60 29 250 170 302 350 415 255 A regression line for the above table is of the form y = A+ Bx. The correlation coefficient is represented by r. If there was no relationship between the number of tweets posted and the number of head- phones sold which of the following would be true? А. А — 0 В. х — 0 C. r = 0 D. y = 0
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 2CYU
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if there was no relationship between the number of tweets posted and the number of head-phones sold which of the following would be true
Transcribed Image Text:A researcher for a company selling headphones conducts an experiment to determine whether
there is correlation between the number of adverts posted via Twitter and number of head-
phones sold. The data recorded over 6 months is shown below
Month
January February
March
April
May
June
Number of
Tweets posted
Number of
headphones
sold
31
15
42
51
60
29
250
170
302
350
415
255
A regression line for the above table is of the form y = A+ Bx. The correlation coefficient is
represented by r.
If there was no relationship between the number of tweets posted and the number of head-
phones sold which of the following would be true?
A. A = 0
B. x = 0
C. r = 0
D. y = 0
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