Mean, Median, Mode

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

A data set can have more than one _______

• Median
• Mode
• Mean
• Midrange

The heights of six students in a class are given below:
158cm     172cm      164cm
164cm     167cm      159cm
 However, there were actually seven students in the class, and the mean height in the class was 165 cm. What was the height of the unknown student?

• 164 cm
• 166 cm
• 171 cm
• 169 cm

On a container ship there were 30 small containers that each weighed 3 tons, 20 medium containers that each weighed 5 tons, and 10 large containers that each weighed 8 tons.
Find the mean weight of the containers on this ship.

• 4.5 tons
• 4 tons
• 5 tons
• 5.5 tons

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

What is the range?

• The sum of the largest and smallest number

• The number in the middle

• The difference between the largest and smallest number

• The number that appears most often

A data set can have more than one mode

• True
• False

Dr. Dre is a dentist. He needs to report on the average (Mean) number of cavities that his patients have.

1, 0, 1, 5, 0, 3, 4. What is the average number of cavities?

• 14

• 2

• 7

• 1