Wk 4 Res/342 Quiz

Week 4 Quiz Name: The true and sham questions are worth 2 point each. 1. The quick reign would say that in a bivariate scatter whoreson with 25 observations, a correlation of 0.45 is significantly different than aught (but just barely). [ X ] lawful [ ] wrong 2. The least(prenominal) squares regression telegraph line is obtained when the sum of the squared residuals is minimized. [ X ] True [ ] spurious 3. When using the least squares method, the column of residuals always sums to zero. [ X ] True [ ] False 4. Negative coefficients in a regression unremarkably indicate weak predictors. [ T ] True [ ] False 5. Non-normality of the residuals from a regression is best detected by looking at the residual plots for each predictor. [ X ] True [ ] False 6. The undetermined sum of squares measures the variability of the dependent variable about a. the sozzled of the Y set. b. the regression line c. the mean of the X values d. the Y-intercept 7. Which of the spare-time activity strain statistic is used to check the normality presumption of the error in a regression model? a. t statistic. b. F statistic c. histogram of residuals. d. Kleins statistic 8. Which of the following is not a characteristic of the F distribution? a. It is a continuous distribution. b. It can never be negative. c. It is a family found on both sets of degrees of freedom. d. It describes the ratio of two precedent means. 9. The sample coefficient of correlation a. can range from -1.00 up to 1.00 b. is also c whollyed Pearsons r. c. is tested for consequence using a t-test. d. has all of the above properties.If you want to total a full essay, rule i t on our website: BestEssayCheap.com

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