ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern): Questions 425 - 428 of 472

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Question 425

Question

MCQ▾

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 426

Question

MCQ▾

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 427

Question

MCQ▾

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 428

Question

MCQ▾

What is the correlation between the following z-scores?

The Correlation between the Following Z-Scores
XY
0.10.2
0.60.4
-0.3-1.0
-0.5-0.3
0.80.7

Choices

Choice (4)Response

a.

b.

0.425

c.

d.

Question does not provide sufficient data or is vague