In regression, a predictor that has a lowp-value is unlikely to be a meaningful addition to...
In regression, a predictor that has a lowp-value is unlikely to be a meaningful addition to the model.
True
False
Homework Answers
The p-value for each term tests the null hypothesis that the coefficient =0. A low p-value (< 0.05) indicates that rejection of the null hypothesis. In other words, a predictor that has a low p-value is likely to be a meaningful addition to your model because changes in the predictor's value are related to changes in the response variable.
False is the answer
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In regression, a predictor that has a lowp-value is
unlikely to be a meaningful addition to...
TRUE or FALSE: The regression equation is always the best predictor of a y-value for a...
TRUE or FALSE: The regression equation is always the best predictor of a y-value for a given value of x. Defend your answer.
Question 2: TRUE or FALSE: The regression equation is always the best predictor of a y-value...
Question 2: TRUE or FALSE: The regression equation is always the best predictor of a y-value for a given value of x. Defend your answer.
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In simple linear regression, a small p-value (probability for the t-value) for the slope indicates that X is not a useful predictor for Y. True or false?
Question 6 1 pts The multiplication of two variables is used as a predictor if the...
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Question 2: TRUE or FALSE: The regression equation is always the best predictor of a y-value for a given value of x. Defend your answer.
12. (Ch13.5) True or False? The effect of a binary predictor in a multiple regression with three predictors (two of them are continuous, one is binary) is to shift the regression fitting plane up or down 13. (Ch13.5) True or False? Unlike other predictors, the student's t for testing the significance of a binary predictor is either 0 or l1 14. (Ch13.5) In a multiple regression model of student grades, we would code the nine categories of business courses taken...
Question 6 1 pts The multiplication of two variables is used as a predictor if the two variables jointly affect the response. O True O False Question 7 1 pts Even if the P-value of the Ftest in a multiple regression model is nearly zero, it is possible that the R2 of the model is much less than one. O True False Question 8 1 pts In selecting independent variables for a regression model, neither the forward selection method nor...
A simple linear regression (linear regression with only one predictor) analysis was carried out using a sample of 23 observations From the sample data, the following information was obtained: SST = [(y - 3)² = 220.12, SSE= L = [(yi - ġ) = 83.18, Answer the following: EEEEEEEE Complete the Analysis of VAriance (ANOVA) table below. df SS MS F Source Regression (Model) Residual Error Total Regression standard error (root MSE) = 8 = The % of variation in the...
Question 15 3 pts A multiple regression model involves 3 predictor variables and a sample of 20 data points. If we want to test the usefulness of the model at the 1% significance level, the critical value of the rejection region is (ROUND TO TWO DECIMALS): 5.33
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