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

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Question 38

Question

MCQ▾

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 39

Question

MCQ▾

Which of the following is NOT a frequency diagram?

Choices

Choice (4)Response

a.

Ogive

b.

Pie Chart

c.

Histogram

d.

Polygon

Question 40

Question

MCQ▾

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 41

Question

MCQ▾

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 42

Question

MCQ▾

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 43

Question

MCQ▾

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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