Statistical Methods-Partial and Multiple Correlations (ISS (Statistical Services) Statistics Paper I (New 2016 MCQ Pattern)): Questions 1 - 5 of 5

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Question number: 1

» Statistical Methods » Partial and Multiple Correlations

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MCQ▾

Question

If is the Coefficient of Correlation then which of the following indicates the strongest relationship?

Choices

Choice (4) Response

a.

b.

c.

d.

Passage

Rama is trying to predict the weight of a newborn given some information about its mother and prenatal care. A1 is the birth weight, it is the criterion. A2 is the mothers weight before getting pregnant, A3 is how many cigarettes a day the mother smoked during pregnancy, A4 is how much weight the mother gained during pregnancy and A5 is how far into the pregnancy the mother was when she began receiving prenatal care. Here is a correlation matrix of the correlations between pairs of variables Use this matrix to answer the following questions.

Table showing the correlation matrix

correlation matrix of the correlations between pairs of variables

A1

A2

A3

A4

A5

A1

1.000

A2

0.543

1.000

A3

-0.341

-0.932

1.000

A4

0.682

0.192

-0.435

1.000

A5

-0.821

-0.472

0.001

0.311

1.000

Question number: 2 (1 of 3 Based on Passage) Show Passage

» Statistical Methods » Partial and Multiple Correlations

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MCQ▾

Question

Which of the variables is likely to be the single best predictor of birth weight of a newborn?

Choices

Choice (4) Response

a.

A2

b.

A4

c.

A3

d.

A5

Question number: 3 (2 of 3 Based on Passage) Show Passage

» Statistical Methods » Partial and Multiple Correlations

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Question

In this matrix, what is the correlation between smoking and weight gain?

Choices

Choice (4) Response

a.

-0.932

b.

-0.341

c.

-0.435

d.

0.001

Question number: 4 (3 of 3 Based on Passage) Show Passage

» Statistical Methods » Partial and Multiple Correlations

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Question

What is the coefficient of determination for the relationship between smoking and mothers’ weight?

Choices

Choice (4) Response

a.

b.

0.868

c.

d.

Question does not provide sufficient data or is vague

Question number: 5

» 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

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