Solve

@ Do Homework - Core Concept #3: Correlation - Comparing two variables - Google Chrome - a x Statistics for Texas Tech MBA - ONLI Homework: Core Concept #3: Correlation - Comparing two variables NE Mayra Martinez 10/09/25 8:20 AM HW Score: 75.56%, 22.67 of 30 points Points: 0.0f 4 Question list l @ Question 20 Asales manager for a major pharmaceutical company analyzes last year's sales data for her 96 sales representatives, grouping them by region (1=East Coast U.S.; 2= Mid West U.S.: 3= West U.S; = Canada: 6 = Rest of World). She plots Sales (in $1000) against Region (1 6) and sees a strong negative correlation. She fits a regression to the data and finds Sales = 1002.5 ~ 102.7 Region. The R is 70.5%. Write a few sentences interpreting this model and describing what she can conclude from this analysis. [4% Click the icon to view the plot. @ Question 21 @ Question 22 O Question 23 O Question 24 O Question 25 Question 26 Question 27 Question 28 Question 29 Question 30 o oO 0 0 8 Video Statcrunch Tech help Choose the correct answer below. A. The model is useful because the Region can be determined from the total Sales. The negative slope indicates that Sales increased from Region 1 to Region 6. B. The model is meaningless because the variable Sales is not quantitative. The slope makes no sense because Sales has no units. The boxplot comparisons are fine, but the regression is meaningless. C. The model is meaningless because the variable Region is not quantitative. The slope makes no sense because Region has no units. The boxplot comparisons are fine, but the regression is meaningless. D. The model is useful because total Sales can be determined from the Region. The negative slope indicates that Sales decreased from Region 1 to Region 6. Graph/chart 1000 800 600 Total Sales 2008 ($ 1000) 400 200