1.A median is sometimes a better measure of the location of a data set because:

A. it is easy to compute as it is in the middle of a data set.

B. if the distribution of the data set is symmetric, median will be automatically known by knowing mean or mode.

C. The statement is wrong because median can't be better than mean.

D. when a data set contains outliers (extreme values), median is not influenced by the outliers.

2.The mode of the following distribution is

A.3

B.4

C.5

D.6

3.Suppose you want to draw a Stem and leaf plot with a five-digit number.

What will be your stem and leaves?

A. First digit stem, the remaining digits leaves.

B. First two digits stem, the remaining digits leaves.

C. First three digits stem, the remaining digits leaves.

D. First four digits stem, the remaining digit leaf.

4.The difference between a bar graph and a histogram is that,

A. a bar graph consists of contiguous rectangles, but histogram doesn't.

B. a bar graph consists of non-contiguous rectangles, but histogram doesn't.

C. there is no difference between a histogram and a bar graph.

D. none of the above.

5.In how many parts does percentile divide a data set?

A. 25.

B. 50.

C. 75.

D. 100.

6.The mean of the numbers in a population is a

A. parameter.

B. data.

C. statistic.

D. variable.

7.The top five universities in the United States can be ranked from one to five. What type of data is that?

A. Nominal scale level.

B. Ordinal scale level.

C. Interval scale level.

D. Ratio scale level.

8.An example of time series data would be

A. a student's one-time scores of different subjects in a semester.

B. the daily weather temperature record of a country over a considerable period of time.

C. the consumer price index (CPI) of a country over a considerable period of time.

D. Both B & C.