Data Analysis Vocabulary

Front

Mean

Back

Average of a set of numbers

Front

Median

Back

Middle value in a data set

Front

Mode

Back

Most frequently occurring value

Front

Standard Deviation

Back

Average distance data values fall from the mean

Front

Outlier

Back

Value significantly different from others. 2 standard deviations below/above mean or 1.5IQRs below Q1 or above Q2

Front

Histogram

Back

Bar Graph for quantitative data

Front

Sample

Back

Subset of a population

Front

Population

Back

Entire group being studied

Front

Quartile

Back

Values that divide a data set into four equal parts

Front

Range

Back

Difference between the highest and lowest values in a data set