In March, Maggie collected the daily sales of ice-cream in Montreal (Y) and the outdoor temperature for each day (X). Sh
Posted: Tue Apr 26, 2022 6:22 pm
In March, Maggie collected the daily sales of ice-cream in Montreal (Y) and the outdoor temperature for each day (X). She computed the sample correlation coefficient between X and Y to be 0.1, and used the data to build a simple linear regression model Y = b + cX. Which of the following statements is true? O c in the linear regression mode Y = b + cx is positive O All of the other answers are true O The related coefficient of determination is 0.1 O 90% of the variation of the ice-cream sales is due to the variance of the sales itself. O Only 10% of the variation of the ice-cream sales is explained by different outdoor temperatures.