Box Plots

Front

What is a box plot?

Back

A box plot, or box-and-whisker plot, is a graphical representation of a dataset that displays its minimum, first quartile, median, third quartile, and maximum.

Front

What does the median represent in a box plot?

Back

The median is the middle value of a dataset when it is ordered from least to greatest, and it divides the dataset into two equal halves.

Front

How do you find the range of a dataset?

Back

The range is found by subtracting the minimum value from the maximum value in the dataset.

Front

What do the whiskers in a box plot represent?

Back

The whiskers extend from the box to the smallest and largest values that are not outliers, showing the spread of the data.

Front

What is the interquartile range (IQR)?

Back

The IQR is the difference between the first quartile (Q1) and the third quartile (Q3) and represents the middle 50% of the data.

Front

How can you identify outliers in a box plot?

Back

Outliers are typically identified as points that fall below Q1 - 1.5*IQR or above Q3 + 1.5*IQR.

Front

What does the first quartile (Q1) represent?

Back

Q1 is the median of the lower half of the dataset and represents the 25th percentile.

Front

What does the third quartile (Q3) represent?

Back

Q3 is the median of the upper half of the dataset and represents the 75th percentile.

Front

If a box plot shows a median of 85, what does this indicate about the dataset?

Back

It indicates that half of the data points are below 85 and half are above 85.

Front

In a box plot, what does a longer whisker indicate?

Back

A longer whisker indicates a greater spread of data points in that direction, showing more variability.