Measures of Center and Variance

What is the mode?

• Number that occurs the most
• The Average
• The difference between the highest and lowest values
• The Number in the middle

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

What is the median?

• The number in the middle
• The difference between the highest and lowest values
• The number that occurs the most
• 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

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

Find the mean of these numbers:
2, 57, 38, 42, 6

• 29
• 38
• 50
• 145

Use the table to find the mean

• 105
• 111
• 118
• 130

Find the Median of the data set

• 77
• 99
• 80
• 78.5

What is the range?

• 6

• 2 - 8

• 3

• 4

What is the first quartile?

• 4

• 5

• 6

• 7