ACET (Actuarial Common Entrance Test) Statistics: Questions 76 - 82 of 201

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Question number: 76

» Measures of Location » Median

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MCQ▾

Question

Weight of eight boys in kg is noted as:

Find the median weight.

Choices

Choice (4)Response

a.

72

b.

71

c.

70

d.

71.5

Question number: 77

» Discrete Distributions » Poisson

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MCQ▾

Question

If X follows Poisson distribution such that Find the mean & variance

Choices

Choice (4)Response

a.

2,1

b.

2,2

c.

1,2

d.

1,1

Question number: 78

» Types of Data » Qualitative and Quantitative Data

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MCQ▾

Question

Which of the following is a one dimensional diagram?

Choices

Choice (4)Response

a.

Bar diagrams

b.

Histograms

c.

Breadth diagrams

d.

Frequency Polygon

Question number: 79

» Continuous Random Variables » Probabilities

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MCQ▾

Question

Out of 8 consonants and 3 vowels, how many words of 3 consonants and 2 vowels can be formed?

Choices

Choice (4)Response

a.

16800

b.

20,000

c.

d.

20,160

Question number: 80

» Correlation and Regression » Covariance

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MCQ▾

Question

If the regression coefficient of b in is equal to zero, then the regression line will

Choices

Choice (4)Response

a.

Pass through the origin

b.

Neither intersect X axis nor Y axis

c.

Be parallel to the X axis

d.

Be parallel to the Y axis

Question number: 81

» Probabilities » Independence of Events

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MCQ▾

Question

A committee of four has to be formed from among three economists, 4 engineers, 2 statisticians and 1 doctor. What is the probability that each of the four professions is represented on the committee?

Choices

Choice (4)Response

a.

0.1143

b.

0.24

c.

0.1742

d.

0.3

Question number: 82

» Types of Data » Stem-And-Leaf

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MCQ▾

Question

Height of 20 students in centimetres is displayed through the following stem and leaf plot-

Stem and leaf plotStem and leaf plot

Stem and leaf plot

Stem

Leaf

14

3 5 6

15

4 8 9

16

0 0 2 5 5 5 7

17

1 2 2 5 6

18

2 6

Which of the following is incorrect?

Choices

Choice (4)Response

a.

15 % of students have height greater than 175cm

b.

The range of the height is 43 cm

c.

The modal height is 172 cm

d.

The median height is 165 cm

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