ACET (Actuarial Common Entrance Test) Statistics: Questions 25 - 32 of 201

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Question 25

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Question

MCQ▾

Weakly pocket money of 6 students are noted as:

₹80, ₹70, ₹90, ₹100, ₹500, ₹50. Find out range.

Choices

Choice (4)Response
a.₹ 30
b.₹ 450
c.₹ 100
d.₹ 400

Question 26

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Question

MCQ▾

Given, . Find

Choices

Choice (4)Response
a.0.74
b.0.90
c.0.90
d.0.16

Question 27

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Question

MCQ▾

If, find.

Choices

Choice (4)Response
a.17
b.8
c.9
d.1

Question 28

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Question

MCQ▾

Given, = 0.67, Find

Choices

Choice (4)Response
a.0.60
b.0.24
c.0.25
d.0.67

Question 29

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Question

MCQ▾

The arithmetic mean of is 6. The value of X is

Choices

Choice (4)Response
a.10
b.11
c.12
d.Question does not provide sufficient data or is vague

Question 30

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Question

MCQ▾

The standard deviation of X and Y are 4 and 5 respectively. The correlation coefficient between them is 0.8. Find the regression coefficient of Y on X.

Choices

Choice (4)Response
a.
b.
c.
d.1

Question 31

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Question

MCQ▾

Which of the following methods uses covariance in calculating correlation coefficient?

Choices

Choice (4)Response
a.Spearman’s Rank Correlation
b.Concurrent Deviation
c.Karl Pearson’s Coefficient of Correlation
d.Question does not provide sufficient data or is vague

Question 32

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Question

MCQ▾

The probability that a student will pass the first examination is 0.8 and the probability of passing the second examination is 0.7. The probability of passing at least one of them is 0.95. What is the probability of his passing both the examinations?

Choices

Choice (4)Response
a.0.55
b.0.42
c.1
d.0.63