Data Review

The mean is the sum of the data points added & then divided by the number of data points. It's also known as the average. True or False.

• True.

• False.

The average of a group of numbers is called the...

• mean

• median

• mode

• range

The middle score of the data set when the data is put in order from least to greatest.

• Mean.

• Median.

• Mode.

The score or number that happens the most.

• Mean.

• Mode.

• Median.

What is the mean of the data set [10, 20, 30, 40, 50]?

• 20

• 25

• 30

• 35

What is the median of the data set [4, 8, 6, 3, 9]?

• 4

• 6

• 8

• 9

A survey conducted in a school showed that 75 out of 300 students prefer online classes. What percentage of students prefer online classes?

• 25%

• 50%

• 75%

• 20%

The graph of a linear equation goes through the points (2, 3) and (4, 7). What is the slope of this line?

• 2

In a data set, the mean is 10, and the median is 12. Which of the following statements is true?

• The data set is evenly distributed.

• The data set is skewed to the left.

• The data set is skewed to the right.

• The mean and median cannot be different.

The mean of four numbers is 75. If three of the numbers are 70, 80, and 70, what is the fourth number?

• 80

• 75

• 70

• 100