Mean, Median, Range, Iqr, Mad

The IQR is a measure of __________________ .

• center

• variation

• quartiles

• range

Find the MAD for following test grades:
100   80   70   90   100

• 30

• 52

• 15

• 10.4

Find the IQR of following test grades:
100   80   70   90   100

• 30

• 20

• 25

• 15

Find the MAD of following test grades:
100   80   70   90   100

• 88

• 52

• 12

• 10.4

Find the measures of variation for the data set.

9.2, 8.7, 8.4, 8.9, 9.5, 9.3, 8.8, 8.9, 8.8, 8.2, 9.6, 9.1

• 0.5

• Q3

• 9.25

• Q1

• 8.75

• Median (Q2)

• 8.9

• IQR

• 1.4

• Range

Match the following terms with its correct definition.

• The number that appears most frequently in a set of numbers

• Mode

• The sum of all values divided by the total number of values

• What if there are 2 numbers in the middle?

• Add together, and divide by 2.

• Median

• The difference between the highest and lowest values in a set of numbers

• Mean or Average

• The middle value in a list of numbers when arranged in ascending order

• Range

Find the measures of variation for the data set.

• 8.75

• Q1

• 8.9

• Median (Q2)

• 0.5

• Q3

• 9.25

• IQR

• 1.4

• Range

The Yankees had the following wins over the last nine years;
89  103  95  97  95  85   84   87  84.
Find the mean. 

• 103

• 96

• 89

• 91

The second quartile is the same as the __________________ .

• mean

• mode

• range

• median

The range is found by _________________ .

• adding the quartiles

• subtracting the quartiles

• subtracting the maximum value minus the minimum value

• the golf course