The number of dummy variables to be added to the regression equation when a categorical variable has k levels is equal to ________.
A) 1/ k - 1
B) k - 1
C) k2
D) k/1
Q. 2For the given data set, what is the approximate percentage of risk that the NPV over the five years will not be positive?
A) 31
B) 0
C) 68
D) 99
Q. 3A distribution is said to be symmetric when the sample mean and the population mean are equal.
Indicate whether the statement is true or false
Q. 4The Kruskal-Wallis test is an example of a parametric test.
Indicate whether the statement is true or false
Q. 5Statistics are measures computed from the entire population of data.
Indicate whether the statement is true or false
Q. 6If the numbers of sp2 and sp3 hybrid gaming consoles produced each day are denoted as X1 and X2 respectively, the function that describes the production department's labor constraint for a week is ________.
A) 2X1 + 1.5X2 875
B) 9X1 + 8X2 3500
C) 2X1 + 1.5X2 875
D) 9X1 + 8X2 3500
Q. 7In ANOVA, if the calculated F statistic exceeds the critical F for a given test, the null hypothesis of equal population means is rejected.
Indicate whether the statement is true or false
Q. 8Pivot tables can be used to create ________.
A) dot-scale diagrams.
B) box-and-whisker plots.
C) cross-tabulations for categorical data.
D) scatter plots.
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