PROBLEM SOLVING. Use Excel to answer the following questions. The following data set shows the weekly advertising expenditure and sales of 12 retail merchants selling face masks. Advertising cost ($) 40 20 25 20 30 50 40 20 50 Sales ($) 385 400 395 365 475 440 490 420 560
PROBLEM SOLVING. Use Excel to answer the following questions. The following data set shows the weekly advertising expenditure and sales of 12 retail merchants selling face masks. Advertising cost ($) 40 20 25 20 30 50 40 20 50 Sales ($) 385 400 395 365 475 440 490 420 560
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.1: Measures Of Center
Problem 3BGP
Related questions
Question
Answer the following:
1. Plot a scatter diagram . Does it appear that there is a linear relationship between advertising cost and sales? Why or why not?
2. Compute the correlation coefficient . (Round of to 4 decimal places.)
3. Interpret the computed correlation coefficient.
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