Question

For Questions 4-5: Another team of analysts tells you that the number of Alexa units orders can be predicted using the regression below: Number of Alexa Units Ordered = 800 + 200xNumber of Alexa Commercial Views Question 4: Fill-in the table below: Dependent Variable Independent Variable Intercept Slope Question 5: What is the predicted Number of Alexa Units Ordered if there are 50 views. If the actual number of units ordered is 7,500 what is the error. (show work) Question 6: Multiple Choice 1. In a scatter plot, a dependent variable goes on: A. Horizontal or x-axis B. Vertical or y-axis C. Either vertical or horizontal D. The axis is selected randomly 2. In a scatter plot, an independent variable goes on: A. Horizontal or x-axis B. Vertical or y-axis C. Either vertical or horizontal D. The axis is selected randomly 3. The following measure of how spread the data is goes mean (average): A. Standard Deviation B. Quartile C. Rank D. Neither 4. Choose the list with all the metrics in 5-number summary: A. Standard Deviation, Variance, Mean, Mode, Maximum B. Minimum, Quartile 1, Median, Quartile 2, Maximum C. Standard Deviation, Variance, Mean, Mode, Minimum D. None of the above

Answer 1

4.

Dependent Variable - Number of Alexa Units Ordered

Independent Variable - Number of Alexa Commercial Views

Intercept - 800

Slope - 200

5.

Predicted Number of Alexa Units Ordered if there are 50 views is,

800 + 200 * 50 = 10800

Actual number of units ordered is 7,500

Error = Observed - Predicted = 7,500 - 10800 = -3300

6.

1. In a scatter plot, a dependent variable goes on: B. Vertical or y-axis

2. In a scatter plot, an independent variable goes on: A. Horizontal or x-axis

3. The following measure of how spread the data is goes mean (average): A. Standard Deviation

4. 5-number summary: B. Minimum, Quartile 1, Median, Quartile 2, Maximum