Review of Descriptive Statistics

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

Paulo got these grades in three tests: 72, 80 and 82. He had one more test to take. He wanted an average of 80 for the four tests. What mark must he get in the fourth test?

• 80
• 234
• It is not possible for him to get an 80 average
• 86

What is the range?

• average
• biggest-smallest
• the middle #
• # happening the most

A data set consists of the numbers 2, 2, 5, 6 and 15.  Which statement is true for this data?

• median > mean
• mean = mode
• mode < median
• median = mode

Find the median, mode and range: 
3, 5, 7, 9, 11, 8, 3

• median:7  mode:3  range:7
• median:6  mode:3  range:7
• median:7  mode:3  range:8