Statistics review

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

Find the Median of the data set

• 77
• 99
• 80
• 78.5

This is used to describe the distribution of the data

• outlier

• range

• measures of variation

• quartile

Which club has the smaller spread?

• Cruisers

• Car Hops

When calculating the range of a data set, I need to

• subtract minimum - maximum

• subtract maximum - minimum

• subtract Q₁ - Q₃

• subtract Q₃ - Q₁

• use the 1.5 ( IQR ) rule