StatsL Unit 2 Vocabulary

Front

What is standard deviation?

Back

A measure of how far values in a data set are from the mean.

Front

How is the mean (average) of a data set calculated?

Back

By adding all numbers in the data set and then dividing by the number of values in the set.

Front

What is the median of a data set?

Back

The middle value when a data set is ordered from least to greatest.

Front

What is the mode of a data set?

Back

The number that occurs most often in a data set.

Front

What is range?

Back

the difference between the highest and lowest value from a set of data.

Front

What is Q1 (the lower quartile)?

Back

The median of the lower half of the data set

Front

What is an outlier?

Back

A data point that is significantly different from other data points in a data set.

Front

What is the interquartile range (IQR)?

Back

The difference between the upper quartile (Q3) and the lower quartile (Q1).

Front

What is Q3 (the upper quartile)?

Back

The median of the upper half of the data set

Front

What is a histogram?

Back

A graphical display where the data is grouped into classes and then are plotted as bars on the vertical axis to show the frequency within each class