Box Plot + IQR Review

Front

What is a Box Plot?

Back

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

Front

What does IQR stand for?

Back

IQR stands for Interquartile Range, which is the difference between the upper quartile (Q3) and the lower quartile (Q1) of a dataset.

Front

How do you calculate the IQR?

Back

To calculate the IQR, subtract the lower quartile (Q1) from the upper quartile (Q3): IQR = Q3 - Q1.

Front

What does the median represent in a Box Plot?

Back

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

Front

What percentage of data falls within the IQR?

Back

Approximately 50% of the data falls within the IQR, which is between Q1 and Q3.

Front

True or False: The IQR can be negative.

Back

False. The IQR is always a non-negative value since it is a difference between two quartiles.

Front

What is the purpose of a Box Plot?

Back

The purpose of a Box Plot is to visually summarize the distribution of a dataset and identify outliers.

Front

If Q1 is 10 and Q3 is 20, what is the IQR?

Back

The IQR is 10 (IQR = Q3 - Q1 = 20 - 10).

Front

What does a longer whisker in a Box Plot indicate?

Back

A longer whisker indicates a greater range of data values outside the quartiles, suggesting more variability in the dataset.

Front

In a Box Plot, what do outliers represent?

Back

Outliers are data points that fall significantly outside the range of the other data points, often represented as individual points beyond the whiskers.