Measure of Variability and Data Displays

The box-and-whisker plots show the test scores of two different classes. Which class had a greater range of test scores?

• There is no range.

• 2nd period

• the ranges are the same

• 1st period

How would you describe this distribution?

• Left Skewed

• Symmetrical

• Right Skewed

• Uniform

How would you describe this distribution?

• Left skewed

• Symmetrical

• Right skewed

• Uniform

What is the median?

• 62

• 58

• 66

• 60

The tennis team needs to raise money by selling raffle tickets. The box plots show how many tickets were sold over 15 days by 3 students. What is the appropriate measure of Variability for Maria?​ ​ (a)  

• Mean

• Range

• IQR

• Median

Which of the following is a measure of variability?

• Range

• Median

• Mode

• Mean

• Dot Plot

Which dot plot shows more variability? a or b?

• a

• b

What is the appropriate measure of variability for the data set?

• Range, because there is not an outlier

• IQR, because there is not an outlier

• Range, because there is an outlier

• IQR, because there is an outlier

Which Dot Plot has the most variation in its data?

• Lahnston

• Zoslow

Match the following

• mean absolute deviation

• The difference between the highest (maximum) and lowest (minimum) values in a data set.

• interquartile range

• The sum of the distances of each data point from the mean of the data set divided by the number of data points. It is always positive.

• range

• the difference between the upper and lower quartile values.