Ch. 13 Review (Mean, Median, Mode)

The ____________ is the measure of central tendency that represents the middle number in a set of data.

• Mode

• Average

• Principal

• Median

In order to find the ____________, we add up all of the numbers in the data set and then divide the sum by the number of numbers.

• Average

• Mode

• Upper Quartile

• Median

The number that appears the most in a data set is commonly known as the ___________.

• Mean

• Range

• Mode

• Average

The ______________ can be found by subtracting the lower extreme from the upper extreme.

• Range

• Median

• Mean

• Rate

How do we find the median when there are exactly TWO numbers in the middle of the data set?

• We add up all of the numbers and divide by the number of numbers.

• Subtract the lower extreme from the upper extreme.

• Add the two numbers together and divide the sum by 2.

• Use the formula I = P x r x t

The following numbers were the result of data collected when students were asked how many pets they had in there home:

0, 0, 0, 1, 1, 1, 2, 2, 2, 2, 3, 3, 4, 6

What is the range of the data?

• 1.9

• 6

• 5

• 2

The following data set represents the responses from students when they were asked how many siblings they had:

1, 1, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 4, 7

What is the average number of siblings for this set of students?

• About 2.6

• 6

• About 18

• About 2.4

If you scored 76, 85, 97, and 83 on your math tests, then scored a 96 on a fifth test for the unit, how much would your median score change?

• It would increase by 12 points

• It would decrease by 4 points

• It would increase by 1 point

• It would stay the same

The median of the numbers 34, 32, 12, 65, and 45 is...

• 12

• 32

• 34

• 65

What is the mode in the following numbers? [3, 7, 24, 3, 7, 7, 1, 3, 7, 3]

• 3 and 7 both are modes

• There is no mode

• 3 only

• 7 only