1. Explain step by step the procedures involved in a) Testing the statistical significance of a single Multiple regression coefficient. b) Testing the statistical significance of all partial slope coefficient. 2. State with brief reasons whether the following statements are true, false or uncertain. a) The adjusted and unadjusted (R^{2} s) are identical only when the unadjusted (R^{2}) is equal to 1. b) When (R^{2}=1, F=0), and when (R^{2}=0, quad F=) infinite. c) 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. d) When we say that an estimated regression coefficient is statistically significant, we mean that it is statistically different from 1. e) By the overall significance of a multiple regression we mean the statistical significance of any single variable included in the model. 1. Explain step by step the procedures involved in a) Testing the statistical significance of a single Multiple regression coefficient. b) Testing the statistical significance of all partial slope coefficient. 2. State with brief reasons whether the following statements are true, false or uncertain. a) The adjusted and unadjusted R's are identical only when the unadjusted R² is equal to 1. b) When R=1, F=0, and when R²=0, F-infinite. c) When the d.f. exceed 120, the 5% critical value (two-tail) and the 5% critical Z (standard normal) value are identical, namely, 1.96. d) When we say that an estimated regression coefficient is statistically significant, we mean that it is statistically different from 1. e) By the overall significance of a multiple regression we mean the statistical significance of any single variable included in the model.
1. Explain step by step the procedures involved in a) Testing the statistical significance of a single Multiple regression coefficient. b) Testing the statistical significance of all partial slope coefficient. 2. State with brief reasons whether the following statements are true, false or uncertain. a) The adjusted and unadjusted (R^{2} s) are identical only when the unadjusted (R^{2}) is equal to 1. b) When (R^{2}=1, F=0), and when (R^{2}=0, quad F=) infinite. c) 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. d) When we say that an estimated regression coefficient is statistically significant, we mean that it is statistically different from 1. e) By the overall significance of a multiple regression we mean the statistical significance of any single variable included in the model. 1. Explain step by step the procedures involved in a) Testing the statistical significance of a single Multiple regression coefficient. b) Testing the statistical significance of all partial slope coefficient. 2. State with brief reasons whether the following statements are true, false or uncertain. a) The adjusted and unadjusted R's are identical only when the unadjusted R² is equal to 1. b) When R=1, F=0, and when R²=0, F-infinite. c) When the d.f. exceed 120, the 5% critical value (two-tail) and the 5% critical Z (standard normal) value are identical, namely, 1.96. d) When we say that an estimated regression coefficient is statistically significant, we mean that it is statistically different from 1. e) By the overall significance of a multiple regression we mean the statistical significance of any single variable included in the model.
Chapter1: Making Economics Decisions
Section: Chapter Questions
Problem 1QTC
Related questions
Question
Transcribed Image Text:1. Explain step by step the procedures involved in a) Testing the statistical significance of a single Multiple regression
coefficient. b) Testing the statistical significance of all partial slope coefficient. 2. State with brief reasons whether the
following statements are true, false or uncertain. a) The adjusted and unadjusted (R^{2} s) are identical only when the
unadjusted (R^{2}) is equal to 1. b) When (R^{2}=1, F=0), and when (R^{2}=0, quad F=) infinite. c) 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. d)
When we say that an estimated regression coefficient is statistically significant, we mean that it is statistically different from
1. e) By the overall significance of a multiple regression we mean the statistical significance of any single variable included
in the model.
1. Explain step by step the procedures involved in
a) Testing the statistical significance of a single Multiple regression coefficient.
b) Testing the statistical significance of all partial slope coefficient.
2. State with brief reasons whether the following statements are true, false or uncertain.
a) The adjusted and unadjusted R's are identical only when the unadjusted R² is
equal to 1.
b) When R=1, F=0, and when R²=0, F-infinite.
c) When the d.f. exceed 120, the 5% critical value (two-tail) and the 5% critical Z
(standard normal) value are identical, namely, 1.96.
d) When we say that an estimated regression coefficient is statistically significant,
we mean that it is statistically different from 1.
e) By the overall significance of a multiple regression we mean the statistical
significance of any single variable included in the model.
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