Measures of Central Tendency and Finding Missing Values

To find the average of a set of numbers, add up all the items and divide by...

• 2.
• The smallest number
• The largest number
• The number of items in the set.

The mode score on the 6th grade math test was 94! Which of these interpretations must be correct?

• 99 was the highest score on the test.

• More students received a 94 than any other score

• No student scored below a 50

• A score of 91 was slightly below average.

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

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

• 10

• 12

• 10 and 12

• No Mode

What is the MEDIAN of this set of data?

• 50

• 60

• 55

• 45

6. Find the mean.
18, 2, 0, 0, 0

• 4

• 5

• 10

• 20

Find the median.
7, 1, 1, 7, 1, 4, 1

• 4

• 7

• 1

• 5

Find the mode.
7, 1, 1, 7, 1, 4, 1

• 7

• 3

• 1

• 4

Find the median.
5, 15, 10, 20, 15, 10, 15

• 20

• 15

• 10

• 5

In order to find the median, the data must be sorted from least to greatest first.

• True

• False