Statistics Review

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

• 2
• The minimum
• The maximum
• The number of items

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

• True
• False

Find the median.
12, 5, 9, 18, 22, 25, 5

• 9
• 8
• 12
• 18

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

To find the _________ you add up all the numbers and then divide by how many numbers you have.

• Mean
• Median
• Mode
• Range

A data set can have more than one mode

• True
• False

In the data set below, which number is an outlier?

45 , 40 , 39 , 43 , 38 , 97 , 37

• 37

• 97

• 43

• 45

In the data set below, which measure of center would best describe the data?

0 , 1 , 0 , 14 , 1 , 0 , 0 , 0 , 0 , 2 , 0 , 0 , 0

• the median

• the mode

• the mean

• this answer is impossible to know

The salary of the employees in the office were $15,000; $18,000; $16,000; $14,000; $90,000; and $17,000.  What is the best measure of the central tendency of the salaries?

• Mean
• Median
• Mode
• Range

What measure of center is best to use when we have outliers?

• mean

• median

• mode

• range