Y, X4i, Xai) satisfy the following assumptions ; in addition, varſu;X4i, X2i) = 3 and var (X41) = 4. A random sample of size n= 397 is drawn from the population. Use the formula below to answer the following questions, 1-x,, x, x, Assume that X, and X, are uncorrelated. Compute the variance of 1. The variance of B, is, (Round your response to five decimal places) Assume that corr(X,, X2) = 0.48. Compute the variance of ß1. The variance of B, is, (Round your response to five decimal places) Which of the following statements is correct? O A. The larger the correlation between X, and X2, the larger the variance of B1. Nevertheless, it is best include X, in the regression if it is a determinant of Y. OB. The larger the correlation between X, and X2, the smaller the variance of B1. Thus, it is best to leave X, out of the regression even if it is a determinant of Y. O C. The larger the correlation between X, and X2, the larger the variance of B1. Thus, it is best to leave X, out of the regression even if it is a determinant of Y. O D. The larger the correlation between X, and X2, the smaller the variance of 81. Nevertheless, it is best include X, in the regression if it is a determinant of Y.
Y, X4i, Xai) satisfy the following assumptions ; in addition, varſu;X4i, X2i) = 3 and var (X41) = 4. A random sample of size n= 397 is drawn from the population. Use the formula below to answer the following questions, 1-x,, x, x, Assume that X, and X, are uncorrelated. Compute the variance of 1. The variance of B, is, (Round your response to five decimal places) Assume that corr(X,, X2) = 0.48. Compute the variance of ß1. The variance of B, is, (Round your response to five decimal places) Which of the following statements is correct? O A. The larger the correlation between X, and X2, the larger the variance of B1. Nevertheless, it is best include X, in the regression if it is a determinant of Y. OB. The larger the correlation between X, and X2, the smaller the variance of B1. Thus, it is best to leave X, out of the regression even if it is a determinant of Y. O C. The larger the correlation between X, and X2, the larger the variance of B1. Thus, it is best to leave X, out of the regression even if it is a determinant of Y. O D. The larger the correlation between X, and X2, the smaller the variance of 81. Nevertheless, it is best include X, in the regression if it is a determinant of Y.
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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Transcribed Image Text:(Yj, X4i, X2i) satisfy the following assumptions ; in addition, varſu;X4i, Xai) = 3 and var (X4) = 4. A random sample of size n= 397 is drawn from the population. Use the formula below to answer the following questions,
X2
Assume that X, and X, are uncorrelated. Compute the variance of 3 .
The variance of 8, is,
(Round your response to five decimal places)
Assume that corr(X4, X2) = 0.48. Compute the variance of 81-
The variance of 8, is,
(Round your response to five decimal places)
Which of the following statements is correct?
O A. The larger the correlation between X, and X2, the larger the variance of B4. Nevertheless, it is best include X, in the regression if it is a determinant of Y.
O B. The larger the correlation between X, and X2, the smaller the variance of B1. Thus, it is best to leave X2 out of the regression even if it is a determinant of Y.
OC. The larger the correlation between X, and X2, the larger the variance of B4. Thus, it is best to leave X, out of the regression even if it is a determinant of Y.
OD. The larger the correlation between X, and X2, the smaller the variance of B1. Nevertheless, it is best include X, in the regression if it is a determinant of Y.
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