G8 Mathematics Q1 Review Quiz

What is the median of the following data set: 5, 7, 9, 12, 13?

• 7

• 9

• 10

• 12

What is the mean of the following numbers: 4, 8, 6, 10?

• 6

• 7

• 8

• 9

In the data set: 3, 3, 4, 5, 6, 3, 7, what is the mode?

• 3

• 4

• 5

• 6

What is the median of the following set of data: 10, 15, 20, 25, 30, 35?

• 20

• 22.5

• 25

• 27.5

A class's test scores are: 85, 90, 88, 92, 78, 85. What does the mode of this data tell you about the class's performance?

• The average score is 85.

• The score that appears most often is 85.

• Half of the class scored above 85

• The range of the scores is 14.

The mean salary of five employees is $50,000. If a new employee is hired with a salary of $60,000, what will happen to the mean salary?

• It will decrease.

• It will remain the same.

• It will increase.

• It cannot be determined.

In a survey, the median age of the respondents is 35. What can you conclude from this?

• The average age is 35.

• Most of the respondents are 35 years old.

• Half of the respondents are younger than 35 and half are older.

• All respondents are 35 years old.

The mode of a set of data is 15. Which of the following is a correct interpretation?

• 15 is the highest value in the set.

• 15 is the middle value when the data is arranged in order.

• 15 is the value that occurs with the greatest frequency.

• The average value of the set is 15.

A store owner wants to know which size of T-shirt sells the most. Which measure of central tendency should they use?

• Mean

• Median

• Mode

• Range

A teacher wants to find the average performance of her class on a test. Which measure of central tendency is the most appropriate to use if there are no extreme scores?

• Mean

• Median

• Mode

• All of the above