Measures of Central Tendency and Variability Vocabulary

What is the median?

• The number in the middle when the numbers are in order from least to greatest.

• The difference between the largest and smallest number.

• The average

• The number that appears most often.

What is the mode?

• The average

• The number that appears most often.

• The largest number - the smallest number

• The number in the middle.

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

• 2.
• The smallest number
• The largest number
• The number of items in the set.

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

• A score of 91 was slightly below average.

The (a)   is the average of a data set.

The ​​ (b)   is the middle of a data set.

The​ ​ (c)   is the number that appears most often in a data set.

The​ ​ (d)   is the difference between the biggest and the smallest number in a data set.

The ​ (e)   is the difference between Q3 and Q1 in a data set.

• mean

• interquartile range (IQR)

• median

• mode

• range

The ​ ​​ (a)   is found by adding all numbers in a set and dividing by how many numbers there are.

The ​ ​ (b)   is found by subtracting the highest and lowest.

The ​ (c)   is the number(s) that occurs the most often.

The ​ (d)   is the middle number.

• mean

• range

• mode

• median

• lower quartile

• upper quartile

The ​ (a)   is the sum of all the numbers, divided by how many numbers were added together. The ​ (b)   is the middle number when the numbers are put in order. The ​ (c)   is the most common number. The ​ (d)   is the difference between the maximum and minimum values.

• mean

• median

• mode

• range

Match the correct statements with the correct numbers

• 40

• Maximum is:

• 65

• Minimum is:

• 45

• the median is:

• 65

• The mean is:

• 85

• The range is:

Match the following data terms with their meaning.

• The number that appears most frequently in a set of numbers

• Range

• The difference between the highest and lowest values in a set of numbers

• Median

• The middle value of a set of numbers

• Mean

• An observation that lies outside the overall pattern of a distribution

• Mode

• Average of a set of numbers

• Outlier

Match the following from the data set:

• 20

• Range

• 21

• Mode

• 15

• Mean

• 16

• Median