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11. When using the regression tool of Excel on a database, the data columns for X's must be contiguous. a. True b. False 12. What kind of residual plot is good? a. Residuals have a trend, either upward or downward. b. Residuals have a visible pattern, such as a straight line or a curve. c. Most of residuals are above the 0-line. d. Residuals looks randomly spread around the 0-line, and have no visible pattern and e. All of a, b, c. 13. If there are 3 levels for a categorical variable, then we need to add variables to the regression model. a. 0 b. 1 d. 3 e. 4 trend. c. 2 additional dummy

11. When using the regression tool of Excel on a database, the data columns for X's must be contiguous. a. True b. False 12. What kind of residual plot is good? a. Residuals have a trend, either upward or downward. b. Residuals have a visible pattern, such as a straight line or a curve. c. Most of residuals are above the 0-line. d. Residuals looks randomly spread around the 0-line, and have no visible pattern and e. All of a, b, c. 13. If there are 3 levels for a categorical variable, then we need to add variables to the regression model. a. 0 b. 1 d. 3 e. 4 trend. c. 2 additional dummy

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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11. When using the regression tool of Excel on a database, the data columns for X's must be contiguous. a. True b. False 12. What kind of residual plot is good? trend. a. Residuals have a trend, either upward or downward. b. Residuals have a visible pattern, such as a straight line or a curve. c. Most of residuals are above the 0-line. d. Residuals looks randomly spread around the 0-line, and have no visible pattern and e. All of a, b, c. 13. If there are 3 levels for a categorical variable, then we need to add variables to the regression model. a. 0 b. 1 c. 2 d. 3 e. 4 additional dummy
Transcribed Image Text:11. When using the regression tool of Excel on a database, the data columns for X's must be contiguous. a. True b. False 12. What kind of residual plot is good? trend. a. Residuals have a trend, either upward or downward. b. Residuals have a visible pattern, such as a straight line or a curve. c. Most of residuals are above the 0-line. d. Residuals looks randomly spread around the 0-line, and have no visible pattern and e. All of a, b, c. 13. If there are 3 levels for a categorical variable, then we need to add variables to the regression model. a. 0 b. 1 c. 2 d. 3 e. 4 additional dummy
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