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a. The adjusted and unadjusted R-s are identical only when the unadjusted R² is equal to 1. b. The way to determine whether a group of explanatory variables exerts significant influence on the dependent variable is to see if any of the explanatory variables has a significant t statistic; if not, they are statistically insignificant as a group. C. _When R² = 1, F = 0, and when R² = 0, F = infinite. d. When the d.f. exceed 120, the 5% critical t value (two-tail) and the 5% critical Z (standard normal) value are identical, namely, 1.96 (approximately 2).

a. The adjusted and unadjusted R-s are identical only when the unadjusted R² is equal to 1. b. The way to determine whether a group of explanatory variables exerts significant influence on the dependent variable is to see if any of the explanatory variables has a significant t statistic; if not, they are statistically insignificant as a group. C. _When R² = 1, F = 0, and when R² = 0, F = infinite. d. When the d.f. exceed 120, the 5% critical t value (two-tail) and the 5% critical Z (standard normal) value are identical, namely, 1.96 (approximately 2).

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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State with brief reason why True or False

a. The adjusted and unadjusted R²s are identical only when the unadjusted R² is equal to 1. b. The way to determine whether a group of explanatory variables exerts significant influence on the dependent variable is to see if any of the explanatory variables has a significant t statistic; if not, they are statistically insignificant as a group. C. When R² = 1, F = 0, and when R² = 0, F = infinite. - d. When the d.f. exceed 120, the 5% critical t value (two-tail) and the 5% critical Z (standard normal) value are identical, namely, 1.96 (approximately 2).
Transcribed Image Text:a. The adjusted and unadjusted R²s are identical only when the unadjusted R² is equal to 1. b. The way to determine whether a group of explanatory variables exerts significant influence on the dependent variable is to see if any of the explanatory variables has a significant t statistic; if not, they are statistically insignificant as a group. C. When R² = 1, F = 0, and when R² = 0, F = infinite. - d. When the d.f. exceed 120, the 5% critical t value (two-tail) and the 5% critical Z (standard normal) value are identical, namely, 1.96 (approximately 2).
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