Interquartile Range Median Mean Mode

The mean is found by ___________________ all of the numbers and then _____________________ by the number of items.

• adding, subtracting

• adding, multiplying

• dividing, adding

• adding, dividing

Quartiles break the data set into _____ equal parts each representing 25% of the data.

• 1

• 2

• 3

• 4

Mary recorded the low temperature each night for 14 days. Her results are listed here: 50, 45, 65, 71, 33, 35, 44, 45, 36, 44, 44, 51, 44, 45

What is the mode of this data?

• 44

• 71

• 33

• 38

Rory has been keeping track of his video games scores in a table. Which statement about the data is true?

• The median is 1,125 and the range is 1,700 points.

• The median is 1,200 and the range is 1,700 points

• The median is 1,200 and the range is 2,475 points

• The median is 1,725 and the range is 3,675 points

Numbers that are used to describe the center of a set of data.  These measures include the mean, median, and mode.

• Interquartile Range

• Measure of Variation

• Measure of Center

• Interval

Mrs. Jones surveyed the class for the number of letters in their given first name. The data is recorded below.
{5, 8, 6, 5, 4, 9, 8, 7, 6, 3, 8, 7, 5, 6, 7, 8}
What is the interquartile range of the data?

• 2

• 3

• 7

• 8

The difference between the third and first quartiles in a data set, representing the middle half of the data.

• range

• interquartile range

• standard deviation

• mean absolute deviation

Which number is not the mean, median, mode, or range of the data set 4, 3, 15, 11, 3, 8, 7, 5?

• 3

• 7

• 12

• 11

How would you describe the mean?

• difference

• average

• middle

• most repeated number

The prices at several different stores for a pair of shoes are shown below.
$78, $79, $81, $82, $83
Two days later, another store has the same shoes on sale for $65. How does the new price affect the data?

• Only the range was affected.

• The median increased, and the range increased.

• The mean increased, and the range increased.

• The mean decreased and the range increased.