Measures of Variation

Mean

100

What are the steps to find the mean of a set of data?

Add up all of the numbers and divide by how many there are

200

Find the mean. 5,3,6,1,9

What is 4.8?

300

Find the mean. 36,42,56,58

What is 48?

400

Find the mean. 79,84,68,93

What is 81?

500

Find the mean. 52,41,63,95,51,74,75,53

What is 63?

Median

100

What is median?

The middle number (Q2)

200

Find the median. 3,8,2,4,9,5,6,9,7

What is 6?

300

Find the median. 12,11,9,14,18,16,9

What is 12?

400

Find the median. 12,11,32,11,12,15,51

What is 12?

500

-52,41,-63,95,51,74,-75,53

What is 46?

IQR/Range

100

What is Range.

The difference between the highest and lowest number

200

Find the range. 28,35,19,41,36

What is 22?

300

Find the range. 44,54,24,36,68

What is 44?

400

Find the IQR. 45,33,99,4,52,15

What is 37?

500

Find the IQR. -14,74,85,-96,-12,45,-78

What is 152?

Mode

100

What is mode?

The number that occurs the most

200

Find the mode. 5,8,9,8,2,5,8

What is 8?

300

Find the Mode. 13,18,16,18,22,11

What is 18?

400

Find the mode. 84,25,15,33,85,44,22,99,25

What is 25?

500

Find the mode. 36,25,14,74,85,96,12

What is no mode?

Box & Whisker Plot

100

What is needed for a box and whisker plot?

What is Q1, Q3, median, minimum value, maximum value

200

If x=15 and a=2, what is 2a+x?

What is 19?

300

Convert 25% into a fraction. Simplify.

What is 1/4?

400

What is the area of a rectangle with a base of 12ft and a height of 8ft?

What is 96ft squared?

500

What is 40% of 93?

What is 37.2?