Measures of Variation

Which of the following is used to describe the distribution of the data?

• Outlier

• Range

• Measures of Variation

• Interquartile Range (IQR)

What 5 items are found when finding the Measures of Variation?

• mean, median, mode, range, IQR

• median, first quartile, third quartile, range, mode

• median, first quartile , third quartile, IQR, range

• mode, IQR, range, mean, first quartile

How do you find the Interquartile Range?

• divide the 3rd quartile (Q3) by the 1st quartile

• subtract the biggest number by the smallest number

• divide the biggest number by the smallest number

• subtract the 3rd quartile (Q3) by the 1st quartile (Q1)

What is the interquartile range of the data set below?

• 3

• 6

• 2

• 8

Roger bowled 7 games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is the range of Roger's scores?

• 193

• 127

• 60

• 66

What is the interquartile range of the data set below?

• 3

• 6

• 2

• 8

Find the range of the following data;

4.1, 10.2, 3.6, 5.9, 6.3, 7.5, 9.2, 3.1

• 5.9

• 7.1

• 3.6

• 7.5

The frequency table shows the gas mileages of several vehicles. The data would be ​ (a)   so the best measure of center would be the ​ (b)   and the best measure of variation would be the ​ (c)   ​ ​

• Skewed Right

• median

• Interquartile Range

• Skewed Left

• Symmetrical

• Mean

• Mean Absolute Deviation

Find the IQR of the following numbers:
84, 88, 72, 74, 98, 16, 94 

• 78

• 22

• 16

• There is no IQR.

What is the IQR of this data set?

• 5

• 6

• 8

• 9