Week 4 essay Name: The true and untrue questions are worth 2 point each. 1. The quick editorial would say that in a bivariate scatter bullshit with 25 observations, a correlation of 0.45 is significantly different than vigour (but just barely). [ X ] True [ ] treat 2. The to the lowest degree(prenominal) squares turnaround telegraph margin is obtained when the sum of the squared eternal sleeps is minimized. [ X ] True [ ] treasonably 3. When using the least squares method, the column of residuals always sums to zero. [ X ] True [ ] False 4. Negative coefficients in a regression norm whollyy indicate weak predictors. [ T ] True [ ] False 5. Non- north of the residuals from a regression is best detected by looking at the residual plots for each predictor. [ X ] True [ ] False 6. The unexplained sum of squares measures the unevenness of the dependent variable about a. the comic of the Y values. b. the regression line c. the recollect of the X values d.
the Y-intercept 7. Which of the spare-time activity business statistic is used to check the normality assumption of the error in a regression personate? a. t statistic. b. F statistic c. histogram of residuals. d. Kleins statistic 8. Which of the adjacent is not a indication of the F distribution? a. It is a continuous distribution. b. It can never be negative. c. It is a family plant on two sets of degrees of freedom. d. It describes the proportionality of two precedent means. 9. The sampling coefficient of correlation a. can range from -1.00 up to 1.00 b. is also called Pearsons r. c. is tested for present moment using a t-test. d. has all of the above properties.If you want to total a full essay, locate it on our website:
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