Box Plot Basics

Front

What is a box plot?

Back

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

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 dataset into two equal halves.

Front

What are quartiles in a box plot?

Back

Quartiles are values that divide a dataset into four equal parts. The first quartile (Q1) is the median of the lower half, the second quartile (Q2) is the median, and the third quartile (Q3) is the median of the upper half.

Front

How do you find the maximum value in a box plot?

Back

The maximum value is represented by the rightmost point of the box plot, indicating the highest data point in the dataset.

Front

What does the upper quartile (Q3) indicate?

Back

The upper quartile (Q3) indicates the value below which 75% of the data falls, representing the higher end of the dataset.

Front

What is the interquartile range (IQR)?

Back

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

Front

How can you identify outliers in a box plot?

Back

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

Front

What does a longer box in a box plot indicate?

Back

A longer box indicates a greater variability in the middle 50% of the data, suggesting a wider spread of values.

Front

What does a box plot show about the distribution of data?

Back

A box plot shows the central tendency, variability, and skewness of the data distribution.

Front

How do you determine the lower quartile (Q1) from a box plot?

Back

The lower quartile (Q1) is represented by the left edge of the box in a box plot, indicating the value below which 25% of the data falls.