Data and Statistics Test Review

Front

What is the mean of the following numbers: 23, 18, 9, 10, 5?

Back

The mean is 13.

Front

How do you calculate the range of a set of numbers?

Back

The range is the difference between the highest and lowest values in the set.

Front

What is the range of Roger's bowling scores: 155, 165, 138, 172, 127, 193, 142?

Back

The range is 66.

Front

What is a stem-and-leaf plot?

Back

A stem-and-leaf plot is a method of displaying quantitative data in a graphical format, similar to a histogram.

Front

Which set of data corresponds to the stem-and-leaf plot: 8, 12, 17, 18, 19, 22, 23, 31, 35, 40?

Back

The correct set is 8, 12, 17, 18, 19, 22, 23, 31, 35, 40.

Front

What is the interquartile range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) in a data set.

Front

What is the interquartile range of the data set: 3, 5, 6, 6, 7, 8, 9?

Back

The IQR is 3.

Front

How do you calculate the percentage of a part compared to a whole?

Back

Divide the part by the whole and multiply by 100.

Front

In a parking lot with 12 cars, 23 SUVs, and 15 trucks, what percentage of the vehicles are trucks?

Back

30% of the vehicles are trucks.

Front

What is a data set?

Back

A data set is a collection of related data points or values.