The least squares equation y = 3 + 4x1 + 5x2 is considered to be a better predictor of y than the least squares
equation y = 7 + 5x3, if the multiple correlation coefficient is __________ than the absolute value of the
correlation coefficient
involving x1 and x3.
Fill in the blank(s) with correct word
Q. 2As the sample size increases, the standard error of the mean increases.
Indicate whether the statement is true or false
Q. 3If the mean of a set of data is negative, then the standard deviation is negative.
Indicate whether the statement is true or false
Q. 4The nonparametric alternative to the two-sample t test for the difference between two independent means is
the
A) one-sample sign test. B) paired-sample sign test.
C) U test. D) Kruskal-Wallis test.
Q. 5The single number that best represents a given interval of a frequency distribution is called the _______ .
Fill in the blank(s) with correct word
Q. 6The area to the right of z = 1.0 is equal to
A) 0.3413. B) 0.8413. C) 0.6816. D) 0.1587.
Q. 7Given the profit payoff table below, if we use the maximin criterion we will choose action _______ .
A1 A2 A3 A4
S1 12 30 20 8
S2 15 10 25 10
Q. 8In regression analysis, the variable that we are trying to predict is called the independent variable.
Indicate whether the statement is true or false
Quick Reply
