Stats: 2.1-2.3 review

What is the formula to calculate the mean of a set of numbers?

• Sum of numbers divided by the total count of numbers

• Sum of numbers multiplied by the total count of numbers.

• Sum of numbers divided by the largest number in the set.

• Sum of numbers divided by the smallest number in the set.

Find the mean of the following set of numbers: 5, 8, 12, 15, 20.

• 8

• 15

• 20

• 12

What is the median of a set of numbers?

• The median of a set of numbers is the middle value when the numbers are arranged in ascending or descending order.

• The median of a set of numbers is the lowest value in the set.

• The median of a set of numbers is the highest value in the set.

• The median of a set of numbers is the average of all the numbers in the set.

Find the median of the following set of numbers: 3, 5, 7, 9, 11.

• 7

• 11

• 9

• 5

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

• Mean

• Range

• Mode

• Average

Find the mode of the following set of numbers: 2, 4, 6, 4, 8, 4.

• 4

• 2

• 6

• 8

What is the range of a set of numbers?

• The range of a set of numbers is the difference between the largest and smallest numbers in the set.

• The range of a set of numbers is the product of all the numbers in the set.

• The range of a set of numbers is the average of all the numbers in the set.

• The range of a set of numbers is the sum of all the numbers in the set.

Find the range of the following set of numbers: 10, 15, 20, 25, 30.

• 25

• 20

• 10

• 15

Which measure of central tendency is affected by outliers?

• range

• mode

• mean

• median

Calculate the mean, median, and mode of the following set of numbers: 2, 4, 6, 8, 10.

• Mean: 6, Median: 6, Mode: None

• Mean: 6, Median: 8, Mode: None.

• Mean: 8, Median: 6, Mode: None.

• Mean: 5, Median: 6, Mode: None.