Data Analysis and Statistics

Summarizes data using a single number.  The single number is found by finding the sum of the data divided by the number of pieces of data.

• Median 

• Range

• Mean

• Mode

The value appearing at the center of a sorted version of a list, or the mean of the two central values.

• Median 

• Range

• Mean

• Mode

A type of bar graph used to display numerical data that has been organized into equal intervals.

• Line Plot

• Interval

• Frequency Table

• Histogram

The distance between the greatest number and the least number in a set of data.

• Mean 

• Median

• Range

• Mode

The median of the data set 3, 7, 9, 6, and 12 is:

• 7

• 6

• 9

• 8

The mean of the following data set: 4, 8, 6, 5, 9 is:

• 6

• 6.4

• 5.5

• 7

The mean of the data set {4, 8, 6, 10, 2} is:

• 5

• 6

• 7

• 8

The median of the data set {12, 5, 7, 19, 12, 20} after arranging in ascending order is:

• 11.5

• 12

• 12.5

• 13

A measure of variation in a set of numerical data, it is the distance between the first and third quartiles of the data set.

• Interquartile Range

• Outliers

• First Quartile

• Third Quartile

Numbers that are used to describe the center of a set of data.  These measures include the mean, median, and mode.

• Interquartile Range

• Measure of Variation

• Measure of Center

• Interval