ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 425 - 428 of 471

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Question number: 425

» Statistical Methods » Bivariate Normal Distribution

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MCQ▾

Question

Let the random variable where and ∑= and . Then which of the following statement is correct regarding the value of?

Choices

Choice (4) Response

a.

is a matrix.

b.

is a matrix.

c.

is a matrix.

d.

Question does not provide sufficient data or is vague

Question number: 426

» Statistical Methods » Association and Contingency

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MCQ▾

Question

The value of , chi square statistic of the given data set is ________.

Choices

Choice (4) Response

a.

b.

c.

9.375

d.

None of the above

Question number: 427

» Statistical Methods » Charts, Diagrams and Histogram

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MCQ▾

Question

Which of the following statement is/are not correct?

Choices

Choice (4) Response

a.

A frequency polygon is a closed figure that is formed by joining the top midpoints of all the rectangles of a histogram using a free hand.

b.

A frequency curve is a closed figure that is formed by joining the top midpoints of all the rectangles of a histogram using straight line.

c.

Both a. and b. are correct

d.

Question does not provide sufficient data or is vague

Question number: 428

» Statistical Methods » Partial and Multiple Correlations

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MCQ▾

Question

What is the correlation between the following z-scores?

Table showing the z-scores

the correlation between the following z-scores

X

Y

0.1

0.2

0.6

0.4

-0.3

-1.0

-0.5

-0.3

0.8

0.7

Choices

Choice (4) Response

a.

b.

0.425

c.

d.

Question does not provide sufficient data or is vague