Compare Measures of Center and Variation

Order the data and find the median or Q₂
2,3,3,3,4,4,4,5,5,5,5,6,6,6,6,6,7,7,8,8,8,9,9

• 3

• 4

• 5

• 6

At Donald's Donuts the number of donut holes in a bag can vary. Help Donald find the mode.

12,10,10,10,13,12,11,13,10

• 13

• 12

• 11

• 10

Which mean absolute deviation would have a greater variability or spread? 4.2 or 8.5?

• 4.2

• 8.5

Which dot plot shows more consistency? a or b?

• a

• b

What is the IQR?

• 5.5

• 4

• 4.5

• 6

Which club has the smaller spread?

• Cruisers

• Car Hops

What is the mean?

• The number that occurs the most

• The number in the middle

• The difference between the highest and lowest values

• The Average

When finding the median what is the FIRST step?

• Mark off the lowest number

• Mark off the highest number

• Find the Middle

• Arrange the number from Least to Greatest

What is the third step when calculating the Mean Absolute Deviation?

• Find the distance each value is from the mean

• Find the mean of the distances

• Find the mean of the data

Find the Mean Absolute Deviation: 10, 9, 3, 8, 10. The Mean is 8

• 3

• 5

• 1

• 2