# Statistics and Probability

This set of MCQs helps you brush up on important math topics and prepare you to dive into skill practice.

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A man earned \$960 per month during the first 7 months and \$960 per month during the next 9 months. Find his average monthly earnings during this period.

\$1960

\$960

\$15360

\$2960

The mean of the first 13 natural numbers is :

8

10

7

11

Nancy, a talk show host, invited the studio audience to voice their opinions on raising the driving age. Of the 10 audience members who chose to speak, 2 of them were against the idea.
Is this sample of the audience members likely to be biased?

Yes

No

Can’t say

Not possible

A bowl contains 30 identical balls numbered 1 to 30. A ball is drawn at random from the bowl. The probability that the number on the ball is a multiple of 3 is:

1/3

1/9

2/3

2/9

The probability of choosing, by random selection, a white ball from a bag containing 3 red balls, 2 white balls, and 4 brown balls is:

2/3

1/3

4/9

2/9

The mean of a set of seven numbers is 81. If one of the numbers is discarded, the mean of the remaining numbers is 78. The value of a discarded number is,

101

100

99

98

Let m be the midpoint and b be the upper limit of a class in a continuous frequency distribution. The lower limit of the class is,

2m-b

2m+b

m+b

m-b

For which set of numbers do the mean, median, and mode all have the same values?

1,3,3,3,5

1,3,3,4,5

1,2,2,3,5

1,2.4.3,5

Quiz/Test Summary
Title: Statistics and Probability
Questions: 8
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