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 (Q1), median, third quartile (Q3), 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, dividing the data into two equal halves.

Front

What are quartiles in a dataset?

Back

Quartiles are values that divide a dataset into four equal parts, with each part representing 25% of the data.

Front

What is the lower quartile (Q1)?

Back

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

Front

What is the upper quartile (Q3)?

Back

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

Front

How do you find the interquartile range (IQR)?

Back

The interquartile range (IQR) is calculated by subtracting the lower quartile (Q1) from the upper quartile (Q3): IQR = Q3 - Q1.

Front

What does the whisker in a box plot represent?

Back

The whiskers in a box plot extend from the quartiles to the minimum and maximum values, showing the range of the data.

Front

What is the purpose of a box plot?

Back

A box plot is used to visually summarize the distribution of a dataset, highlighting its central tendency and variability.

Front

How can you identify outliers in a box plot?

Back

Outliers can be identified as points that fall outside the whiskers of the box plot, typically more than 1.5 times the IQR from the quartiles.

Front

What percentage of data lies between the lower quartile and upper quartile?

Back

50% of the data lies between the lower quartile (Q1) and upper quartile (Q3).