Box Plot Analysis

Which component of the box and whisker plot represents the median?

• The left whisker

• The right whisker

• The line inside the box

• The entire box

Which of the following statements is true about the interquartile range (IQR)?

• IQR is the difference between the maximum and minimum values.

• IQR is the difference between the median and the first quartile.

• IQR is the difference between the third quartile and the first quartile.

• IQR is the sum of the first and third quartiles.

Which of the following statements is true about the median in a box and whisker plot?

• The median is always the highest value.

• The median is always the lowest value.

• The median divides the data set into two equal parts.

• The median is the same as the mean.

What percent of students have a height between 58 inches and 60 inches?

• 25%
• 50%
• 75%
• 100%

What percentage of the data is between 90 and 140?

• 25 %
• 50%
• 75%
• 100%

What is ALWAYS your first step when given a set of data?

• Put the numbers in order from greatest to least.

• Put the numbers in order from least to greatest.

• Find the median.

• Find the quartiles.

Which car had the lowest range of jump distances?

• Car A
• Car B
• Both 
• Neither

Which group has a higher median?

• Group A
• Group B

A value that is much higher or much lower than the other values in a set of data.

• Outlier
• Box Plot
• Range
• Histogram

The data set below has an outlier of 42.
2, 5, 12, 15, 19, 4, 6, 11, 16, 18, 12, 12, 42
What effect does removing the outlier have on the distribution of the data?

• The mean will decrease
• The median will decrease
• The mean will increase
• The median will increase