The coefficient of determination represents the relative proportion of the total variation in the outcome variable that can be accounted for by the predictor variable in the regression.
a. True
b. False
Question 2Percentages are always calculated in the direction of the causal variable.
a. True
b. False
Question 3The error term in the regression model represents all factors that determine criterion variable that are not part of the model.
a. True
b. False
Question 4Cross tabulation work equally will with continuous measures that have been recast as categorical measures.
a. True
b. False
Question 5Multicollinearity is said to be present in a regression problem if the criterion variables are independent.
a. True
b. False
Question 6A statistic used to measure the strength of relationship between categorical variables is called a Cramer's V.
a. True
b. False
Question 7A toy storeowner hypothesizes, at the 95 level of confidence, that parents spend less than 100 on toys per visit to her store. A sample is taken and the hypothesis test shows a z value of -1.65 . We accept the hypothesis:
a. True
b. False
Question 8All other variables held constant, a 95 confidence interval will give us a narrower range than will a 99 confidence interval.
a. True
b. False
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