Mean Median Pre Test

To find the median, the data must be sorted from least to greatest

• True

• False

find the mean: 4, 8, 0, 0

• 1

• 0

• 3

• 2

Find the mean of these numbers:
5,11,2,12,4,2

• 4.1

• 6

• 4.5

• 4

Bryan recorded the number of hours he slept last week. The data is shown below.
6.5, 7, 7.5, 6.5, 12, 7, 7.5
Which is a true comparison of the measures of center for Bryan's sleep data?

• Median = Mean

• Mean < Median

• Mean > Median

• Range = Mean

If 10 is added to every value in a set of data, what will happen to the value of the median?

• it will increase by 10

• it will decrease by 10

• it will stay the same

• it will both increase and decrease

What is the mean score for the football team in this graph?

• 18

• 12

• 4

• 15

What is the median score for the football team in this graph?

• 17

• 7

• 4

• 24

For the provided set of data, find the Median:

3, 3, 3, 3, 4, 5, 9, 11, 13

(a)  

Answer explanation

The median is the middle value when all the values are arranged in ascending order. The median value for this set of data is 4.

Find the mean for this set of data: 3, 3, 3, 3, 4, 5, 7.

(a)  

Answer explanation

A group of friends recorded how many hours they each spend watching television a week. Their results are shown in the following table.

Calculate the mean for the data, correct to 2 decimal places.

(a)