If A and B cannot occur at the same time they are called mutually exclusive.

Select one:

a. True

b. False

You have collected data on the responses to two questions asked in a survey of 40 college students majoring in businessWhat is your gender (Male = M; Female = F) and What is your major (Accountancy = A; Computer Information Systems = C; Marketing = M). Which of the following is the best for presenting the data?

Select one:

a. A time-series plot

b. A stem-and-leaf display

c. A contingency table

d. A Pareto chart

The universe or "totality of items or things" under consideration is called

Select one:

a. a primary data source

b. a secondary data source

c. a sample

d. a population

A summary measure that is computed to describe a characteristic of an entire population is called

Select one:

a. a parameter

b. a summary table

c. an ordered array

d. a statistic

You were told that the 1st, 2nd and 3rd quartiles of female students weight at a major university are 95 lbs, 125 lbs, and 138 lbs. What percentage of the students weigh more than 138 lbs?

Select one:

a. 100%

b. 25%

c. 75%

d. 50%

In general, which of the following descriptive summary measures cannot be easily approximated from a boxplot?

Select one:

a. The interquartile range

b. The range

c. The median

d. The variance

You have downloaded data on crime rate and median income level for 150 communities. You wonder whether there is any association between crime rate and median income level. Which of the following is the best for presenting the data?

Select one:

a. A scatter chart

b. A stem-and-leaf display

c. A time-series plot

d. A histogram

The number of defective apples in a single box is an example of a continuous variable.

Select one:

a. True

b. False

A business venture can result in the following outcomes (with their corresponding chance of occurring in parentheses): Highly Successful (10%), Successful (25%), Break Even (25%), Disappointing (20%), and Highly Disappointing (?). If these are the only outcomes possible for the business venture, what is the chance that the business venture will be considered Highly Disappointing?

Select one:

a. 20%

b. 15%

c. 10%

d. 25%

If two events are collectively exhaustive, what is the probability that both occur at the same time?

Select one:

a. 1.00

b. 0

c. Cannot be determined from the information given

d. 0.50

The smaller the spread of scores around the arithmetic mean,

Select one:

a. the smaller the coefficient of variation

b. the smaller the interquartile range

c. None of these

d. All of these

e. the smaller the standard deviation