Question: You have to study the relationship between the monthly e-commerce sales and the online advertising costs. You have the survey results for 7 online stores

 You have to study the relationship between the monthly e-commerce sales

and the online advertising costs. You have the survey results for 7

You have to study the relationship between the monthly e-commerce sales and the online advertising costs. You have the survey results for 7 online stores for the last year. Your task is to find the equation of the straight line that fits the data best. The following table represents the survey results from the 7 online stores. Monthly E-commerce Sales Store (in 1000 s). X Online Advertising Dollars (1000 s). Y 1 368 1.5 2 340 1.3 3 565 2.8 4 954 0.8 5 331 1 6 556 2.2 7 376 1.3 1. Find the correlation coefficient. Round the correlation coefficient to nearest thousandth if necessary. (0.13457 would be entered 0.135) 2. Use a TI-84 and check the graph of the scatter plot. If you see any outlier(s), exclude them from the data set, then answer the following questions. (a) Find the correlation coefficient without outlier(s). . Round the correlation coefficient to nearest thousandth if necessary. (0.13457 would be entered 0.135) (b) Find the critical value from the table. Does linear relation exist between monthly E-commerce sales and online advertising costs? (enter "yes", "no" or "na")

Step by Step Solution

There are 3 Steps involved in it

1 Expert Approved Answer
Step: 1 Unlock blur-text-image
Question Has Been Solved by an Expert!

Get step-by-step solutions from verified subject matter experts

Step: 2 Unlock
Step: 3 Unlock

Students Have Also Explored These Related Mathematics Questions!