Statistics Multiple Choice

The mean of 9, 6, 4, 8, 7, 2 is

• 3

• 5.5

• 6

• 7

The data which occurs most frequently in a distribution is called the

• median

• mean

• mode

• range

The numbers 13, 7, 18, 13, 12, 13, 10, 7, 18, 2, 3 are scores on a test. What does 13 represent?

• the median

• the mode

• the mean

• the range

Which of the following is NOT a type of average?

• median

• mode

• mean

• range

The median of 3, 2, 6, 2, 3, 7, 4 is

• 2

• 2.5

• 3

• 4

The mean of six number is 15. If five of those numbers are 10, 12, 15, 16 and 17, the remaining number is

• 15

• 20

• 70

• 90

If the mean of the four numbers 2, 4,  $\chi$  , and 6 is 5, then  $\chi$   is

• 2

• 6

• 8

• 16

A company employs 10 workers at $3500 per month and 5 clerks at $2000 per month. What is the mean monthly wage of the 15 employees?

• $ 225

• $ 300

• $ 2250

• $ 3000

Questions 9 - 11 refer to the information below, which shows the raw data of scores obtained by 20 students in a test.

2 6 4 5 4

4 5 8 2 6

5 4 2 5 3

4 5 6 3 5

Which of the frequency tables below, represent the above information?

[Hint: Do your own frequency table in your book and see which on matches]

• 
• 
• 
• 

What is the mean score?

[Hint: Use the correct frequency table from the previous question and multiple scores by frequency and add them up and  $\div$   by the total frequency.]

• 3.5

• 4.4

• 4.7

• 5.5