Box plot with plt.boxplot in Matplotlib - Cheat Sheet & Quick Revision

Recall & Review

beginner

What is a box plot used for in data analysis?

A box plot shows the distribution of data by displaying the median, quartiles, and possible outliers. It helps us understand the spread and skewness of the data.

beginner

Which matplotlib function is used to create a box plot?

The function plt.boxplot() is used to create box plots in matplotlib.

beginner

What does the line inside the box in a box plot represent?

The line inside the box represents the median value of the data set.

intermediate

How does plt.boxplot show outliers in the data?

Outliers are shown as individual points outside the whiskers of the box plot.

intermediate

What are the 'whiskers' in a box plot?

Whiskers extend from the box to the smallest and largest values within 1.5 times the interquartile range from the quartiles. They show the range of most data points.

What does the box in a box plot represent?

A The interquartile range (middle 50% of data)

B The mean and standard deviation

C All data points

D Only outliers

The box shows the interquartile range, which covers the middle 50% of the data.

Which matplotlib function creates a box plot?

A plt.hist()

B plt.scatter()

C plt.plot()

D plt.boxplot()

plt.boxplot() is the function used to create box plots.

In a box plot, what do the whiskers represent?

A The range of data excluding outliers

B The outliers

C The mean value

D The median value

Whiskers extend to the smallest and largest data points within 1.5 times the interquartile range, excluding outliers.

How are outliers shown in a box plot?

A As whiskers

B As individual points outside whiskers

C As part of the box

D They are not shown

Outliers appear as individual points outside the whiskers.

What does the line inside the box of a box plot indicate?

A Mean

B Mode

C Median

D Maximum value

The line inside the box shows the median of the data.

Explain how to create a box plot using matplotlib's plt.boxplot and what key parts of the data it shows.

Think about the parts of the box plot and the function name.

Describe what information a box plot gives about a data set and why it is useful.

Consider what you learn about data from the box and whiskers.