Measures of Central Tendencies

To find the ________ you put all numbers in order from least to greatest and find the number that is in the middle.

• Mean

• Mode

• Median

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

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

• 11

• 12

What measure of central tendency (mean, median or mode) would be best for the following set of data?

0, 89, 92, 97, 99, 100

• Mode, because it is the one that shows up the most.

• Median, because there is an outlier. The outlier could be incorrect and would influence the mean too much.

• Mean, because there is not an outlier. You should always use the mean.

Which measure of central tendency is extremely affected by a very high or very low score (outlier)?

• Mean

• Mode

• Median

Which measure of central tendency do most shop owners use when deciding what new products to order?

• Mean

• Mode

• Median

Diagram 1 shows the grads obtained by a group of students in a Mathematics test. Determine the mode.

• Grade A

• Grade B

• Grade C

• Grade D

Find the median for the set of numbers 4, 8, 2, 9, 5, 4, 3, 10

• 3

• 4

• 4.5

• 8

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

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