Box Plots

A Box Plot, also known as a whisker plot, is a graphical representation of a dataset that displays its minimum, first quartile (Q1), median, third quartile (Q3), and maximum.

The RANGE is the difference between the highest and lowest values in a dataset.

RANGE = Maximum Value - Minimum Value.

A Quartile is a type of quantile that divides a dataset into four equal parts.

The Lower Quartile (Q1) is the median of the lower half of a dataset, representing the 25th percentile.

The Median is the middle value of a dataset when it is ordered from least to greatest.

If the number of observations is odd, the median is the middle number. If even, it is the average of the two middle numbers.

The Upper Quartile (Q3) is the median of the upper half of a dataset, representing the 75th percentile.

The Interquartile Range (IQR) is the difference between the upper quartile (Q3) and the lower quartile (Q1), representing the middle 50% of the data.

IQR = Q3 - Q1.