Statistics Vocabulary

Front

data set

Back

a group of related measurements or recorded values

Front

mean

Back

the sum of the data values divided by the number of data values; it is also called the average

Front

measure of center

Back

one value used to represent the central value of a data set

Front

median

Back

the middle number of a data set

Front

mode

Back

the value or item that appears most frequently in a set of data

Front

outlier

Back

an extreme value that is far from the rest of the values in a data set

Front

absolute deviation

Back

absolute value of the distance from the mean

Front

absolute value

Back

the distance of a number’s graph from the origin; the absolute value of 0 is 0; the absolute value of a number a is denoted by |a|.

Front

mean absolute deviation

Back

the average distance of all the data values from the mean of the data

Front

biased sample

Back

a sample that is not representative of the population