Statistics Analysis question! BUS310
In a one-way ANOVA test, we conclude there are differencesacross population means if the
a. between variation is small relative to the withinvariation
b. between variation is large relative to the withinvariation
c. between variation and withinvariation are equal
Suppose a researcher sets up a design in which there are fivedifferent means and a total of 32 measurements in the study. Foralpha = .01, the critical table F value is ____.
a. 4.07
b. 3.75
c. 3.78
d, 4.91
e. 4.1
The strength of a linear relationship in simple linearregression change if the units of the data are converted, say fromfeet to inches.
a. True
b. False
The contingency table in a chi-square test of independencebetween two variables has four rows and six columns representingthe number of categories for each variable. The number of degreesof freedom associated with the test statistic is __________.
a.15
b. 24
c. 10
d. 20
Which of the following statements is true regarding thechi-square goodness-of-fit test for normality:
a. The test does depend on which and how many categories we usefor the histogram.
b. The test is not very effective unless the sample size islarge, say, at least 80 or 100.
c. The test tends to be too sensitive if the sample size isreally large.
d. None of the above responses are true
e. Responses a, b and c are correct
The weakness of scatterplots is that they:
a. do not actually quantify the relationships betweenvariables
b. only help identify outliers
c.can be misleading about the types of relationships theyindicate
d. do not help identify linear relationships
A cost accountant is developing a regression model to predictthe total cost of producing a batch of printed circuit boards as alinear function of batch size (the number of boards produced in onelot or batch). The slope of the accountant’s model is ______.
a. unit variable cost
b. total variable cost
c. fixed cost
d. batch size
e. total cost
A chi-square goodness-of-fit test can be used as an alternativeto z-test for population proportions if there are only twoclassifications.
a. true
b. false
Thank you!
