Unit6Lesson2Review

What is the formula for calculating the mean of a data set?

• Sum of all data values / Number of data values

• Maximum value - Minimum value

• Number of data values / Sum of all data values

• Sum of all data values + Number of data values

To find the median, the data must be arranged in what order?

• Descending

• Random

• Ascending

• Alphabetical

What is the mode of a data set?

• The average of all data values

• The middle number in an ordered data set

• The number that appears most frequently

• The difference between the largest and smallest values

Which measure of center is the sum of all data values divided by the number of values?

• Median

• Mode

• Mean

• Range

What is the range of the data set: 3, 7, 12, 18, 22?

• 15

• 19

• 22

• 18

What does the measure of spread describe?

• The average of data points

• How data points are distributed or how much they vary

• The middle value of data points

• The most frequent data point

The range of a data set is found by subtracting the _______ value from the maximum value.

• mean

• minimum

• median

• mode

A data set has Q1 = 15 and Q3 = 45. What is the IQR?

• 15

• 30

• 45

• 60

The standard deviation measures how much the data values deviate from the _______.

• median

• mode

• mean

• range

A higher standard deviation indicates that the data points are more _______ from the mean.

• clustered

• spread out

• identical

• similar