Data- Box & Whisker Plots

Front

What is a Box Plot?

Back

A Box Plot, or Box-and-Whisker Plot, is a graphical representation of a data set that shows its minimum, first quartile (Q1), median, third quartile (Q3), and maximum values.

Front

What does the term 'minimum value' refer to in a data set?

Back

The minimum value is the smallest number in a data set.

Front

What is the 'median' in a data set?

Back

The median is the middle value when the data set is ordered from least to greatest.

Front

What is the 'upper quartile'?

Back

The upper quartile (Q3) is the median of the upper half of the data set.

Front

What is the 'lower quartile'?

Back

The lower quartile (Q1) is the median of the lower half of the data set.

Front

How do you calculate 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 percentage of data falls within the interquartile range (IQR)?

Back

Approximately 50% of the data falls within the interquartile range (IQR).

Front

What is the significance of the median in a Box Plot?

Back

The median divides the data set into two equal halves, providing a measure of central tendency.

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.