Box and Whisker Plots

Front

What is a Box and Whisker Plot?

Back

A Box and Whisker Plot is a graphical representation of data that shows the distribution, median, quartiles, and outliers.

Front

What does the Interquartile Range (IQR) represent?

Back

The Interquartile Range (IQR) represents the range of the middle 50% of the data, calculated as Q3 - Q1.

Front

What is the lower quartile (Q1)?

Back

The lower quartile (Q1) is the median of the lower half of the data set, 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 data set, representing the 75th percentile.

Front

How do you find the median in a data set?

Back

To find the median, arrange the data in order and locate the middle value. If there is an even number of values, average the two middle values.

Front

What does a Box and Whisker Plot show about data spread?

Back

A Box and Whisker Plot shows how spread out the data is by displaying the range, IQR, and any outliers.

Front

What does it mean if a Box and Whisker Plot has a long whisker?

Back

A long whisker indicates a larger spread of data points in that direction, suggesting more variability.

Front

What is the purpose of the 'box' in a Box and Whisker Plot?

Back

The 'box' represents the interquartile range (IQR), showing the middle 50% of the data.

Front

How can you determine if data is skewed using a Box and Whisker Plot?

Back

If the median line in the box is closer to one end of the box, the data is skewed in that direction.

Front

What does it mean if two Box and Whisker Plots have the same median but different IQRs?

Back

It means that while the central tendency is the same, the spread of the data is different.