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Suppose you are given the following data involving weekly sales and test scores supposedly designed to pick out the “best" salespersons. Weekly Sales (y)-in thou. of dollars $6 $12 Salesperson Test Score (x) 1. Mr. Amber 4 2. Mr. Archer 2 3. Ms. Smith 3 $4 4. Mr. Malcolm $8 5. Ms. Goodwin 10 $11 Calculate the correlation coefficient, r. Calculate the coefficient of determination, r; of non determination. Interpret them. Suppose you wish to test for the significance of r, the correlation coefficient, in problem 7a, given that n=5. Using the .01 level of significance, test the hypothesis that r is not different from 0 versusthe hypothesis that r is different from 0 (remember r can be between -1 and +1) in the population. Do you accept or reject the null hypothesis?

Suppose you are given the following data involving weekly sales and test scores supposedly designed to pick out the “best" salespersons. Weekly Sales (y)-in thou. of dollars $6 $12 Salesperson Test Score (x) 1. Mr. Amber 4 2. Mr. Archer 2 3. Ms. Smith 3 $4 4. Mr. Malcolm $8 5. Ms. Goodwin 10 $11 Calculate the correlation coefficient, r. Calculate the coefficient of determination, r; of non determination. Interpret them. Suppose you wish to test for the significance of r, the correlation coefficient, in problem 7a, given that n=5. Using the .01 level of significance, test the hypothesis that r is not different from 0 versusthe hypothesis that r is different from 0 (remember r can be between -1 and +1) in the population. Do you accept or reject the null hypothesis?

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
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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Suppose you are given the following data involving weekly sales and test scores supposedly designed to pick out the “best" salespersons. Weekly Sales (y)-in thou. of dollars $6 $12 Salesperson Test Score (x) 1. Mr. Amber 4 2. Mr. Archer 2 3. Ms. Smith 3 $4 4. Mr. Malcolm $8 5. Ms. Goodwin 10 $11 Calculate the correlation coefficient, r. Calculate the coefficient of determination, r; of non determination. Interpret them. Suppose you wish to test for the significance of r, the correlation coefficient, in problem 7a, given that n=5. Using the .01 level of significance, test the hypothesis that r is not different from 0 versusthe hypothesis that r is different from 0 (remember r can be between -1 and +1) in the population. Do you accept or reject the null hypothesis?
Transcribed Image Text:Suppose you are given the following data involving weekly sales and test scores supposedly designed to pick out the “best" salespersons. Weekly Sales (y)-in thou. of dollars $6 $12 Salesperson Test Score (x) 1. Mr. Amber 4 2. Mr. Archer 2 3. Ms. Smith 3 $4 4. Mr. Malcolm $8 5. Ms. Goodwin 10 $11 Calculate the correlation coefficient, r. Calculate the coefficient of determination, r; of non determination. Interpret them. Suppose you wish to test for the significance of r, the correlation coefficient, in problem 7a, given that n=5. Using the .01 level of significance, test the hypothesis that r is not different from 0 versusthe hypothesis that r is different from 0 (remember r can be between -1 and +1) in the population. Do you accept or reject the null hypothesis?
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