# ACET (Actuarial Common Entrance Test) Statistics: Questions 50 - 55 of 201

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## Question number: 50

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MCQ▾

### Question

Which of the following is NOT true about scatter diagram?

### Choices

Choice (4)Response

a.

It shows the degree of correlation

b.

If the dots are more scattered, it shows a low degree of correlation

c.

It indicates the coefficient of correlation

d.

It shows the direction of correlation

## Question number: 51

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MCQ▾

### Question

If A and B are two events such that and . Find .

### Choices

Choice (4)Response

a.

b.

c.

d.

None of the above

## Question number: 52

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MCQ▾

### Question

If covariance between the variables X and Y is 10 and the variances of X and Y are 16 and 9 respectively then the coefficient of correlation is

### Choices

Choice (4)Response

a.

0.833

b.

0.721

c.

0.215

d.

0.146

## Question number: 53

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MCQ▾

### Question

What is the value of ?

### Choices

Choice (4)Response

a.

100!

b.

c.

9800

d.

9900

## Question number: 54

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MCQ▾

### Question

A group consists of 3 girls and 4 boys. In how many ways can a team of 5 members be selected if the team has 2 girls and 3 boys?

### Choices

Choice (4)Response

a.

30

b.

12

c.

6

d.

Both b. and c. are correct

## Question number: 55

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MCQ▾

### Question

The value which occurs most frequently in the set of observations and around which the other items of the set are supposed to cluster densely is called

### Choices

Choice (4)Response

a.

Mean

b.

Median

c.

Mode

d.

Geometric mean

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