ACET (Actuarial Common Entrance Test) Statistics: Questions 38 - 43 of 201

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Question number: 38

» Continuous Random Variables » Coefficient of Skewness

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MCQ▾

Question

For 50 students of a class the regression equation of marks in Statistics and Mathematics is , where X and Y respectively represent marks in Statistics and Mathematics is 44, then the mean marks in Statistics are

Choices

Choice (4)Response

a.

72.5

b.

54.2

c.

62.4

d.

24.9

Question number: 39

» Types of Data » Histogram

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MCQ▾

Question

Which of the following is NOT a frequency diagram?

Choices

Choice (4)Response

a.

Ogive

b.

Pie Chart

c.

Histogram

d.

Polygon

Question number: 40

» Continuous Random Variables » Mean, Mode, Median

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Question

For a bivariate data, the mean value of , the mean value of , the regression coefficient of Y on X is and the correlation coefficient between X and Y is . Find the regression coefficient of X on Y.

Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

Question number: 41

» Probabilities » Independence of Events

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MCQ▾

Question

Two events A and B are mutually exclusive and . Find the probability that either A or B will occur.

Choices

Choice (4)Response

a.

b.

c.

d.

Question does not provide sufficient data or is vague

Question number: 42

» Discrete Random Variables » Mean, Mode, Median

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MCQ▾

Question

The Mean and Median values of a series are 16 cm and 20 cm respectively. What is the modal value of the series?

Choices

Choice (4)Response

a.

18

b.

20

c.

28

d.

24

Question number: 43

» Discrete Distributions » Poisson

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MCQ▾

Question

Which probability distribution is suitable for calculating the number of air accidents in some unit of time?

Choices

Choice (4)Response

a.

Binomial

b.

Normal

c.

Geometric

d.

Poisson

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