Measures of Central Tendency

The number of pages that Carolyn wrote in her journal each day from Monday to Friday is shown below: 
9, 8, 12, 6, 10
What is the mean number of pages she wrote per day?

• 5
• 6
• 9
• 11

What is the mode?

• The value that occurs the most often in a data set
• The middle number in an ordered set of data
• The sum of all the numbers in a data set divided by the size
• The sum of the between the greatest and the least elements, divided by two

What is the mean?

• The value that occurs the most often in a data set
• The middle number in an ordered set of data
• The sum of all the numbers in a data set divided by the size
• The sum of the between the greatest and the least elements, divided by two

What is the median?

• The value that occurs the most often in a data set
• The middle number in an ordered set of data
• The sum of all the numbers in a data set divided by the size
• The sum of the between the greatest and the least elements, divided by two

At Donald's Donuts, the number of donut holes in a bag can vary. Help Donald find the mode of the number of donut holes per bag described in the sample below:

{12, 10, 10, 10, 13, 12, 11, 13, 10}

• 13

• 12

• 11

• 10

A data set can have more than one _______

• Median

• Mode

• Mean

• Range

Roger bowled seven games last weekend. His scores are: 155, 165, 138, 172, 127, 193, 142. What is Roger's median score?

• 127

• 155

• 156

• 193

Paulo got these scores on three tests: 72, 80 and 82. He has one more test to take. He wants a test average of 80 for the four tests. What grade must he get on the fourth test?

• 78

• 80

• 84

• 86

The heights of some students are given below:

158 cm 172 cm 164 cm

164 cm 167 cm 159 cm

What is the range of the heights?

• 13 cm

• 14 cm

• 164 cm

• 330 cm

What do you do if there are two numbers in "the middle" when you are finding the median?

• Pick your favorite number
• Add the two numbers in the middle & then divide by two.
• They are both the median
• None of the above