Measures Of

What is the mode?

• The average

• The number that appears most often.

• The largest number - the smallest number

• The number in the middle.

To find the mean of a set of numbers, add up all the items and divide by...

• 2

• The minimum

• The maximum

• The number of items

Another word for mean is

• average

• mode

• Ms. Dauntain

• range

In order to find the median, the data must be sorted from least to greatest first.

• True

• False

Find the median for the following prices;

$12.50, $15.50, $15, $17.50, $11.50

• $12.50

• $15

• $17.50

• $11.50

Given the data: 136, 150, 119, 150, 125, 140.

Find the upper quartile (Q3). (Hint... put the numbers in order and find the median to help you find Q3)

• 125

• 139.5

• 150

• 143

Find the lower quartile (Q1) of the following set of scores 6, 7, 8, 9, 11, 13, 15

• 13

• 9

• 7

• 6

Find the IQR (Q3 - Q1) of the data

20, 22, 25, 29, 31

• 30

• 25

• 21

• 9

The table shows the points earned by contestants in a competition. Find the range and the interquartile range of the points.

• Range: 15; IQR: 13

• Range: 15; IQR: 12

• Range: 15; IQR: 11

• Range: 15; IQR: 10

Calculate the interquartile range of the following data: 17, 18, 18, 19, 20, 21, 21, 23, 25

• 3

• 8

• 4

• 5