Correlation and Regression (CA Foundation Maths, Statictics, Logic, and Reasoning): Questions 1 - 6 of 42

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Question number: 1

» Correlation and Regression

MCQ▾

Question

for a p×q classification of bivariate data, the maximum number of conditional distributions is

Choices

Choice (4) Response

a.

p + q

b.

pq

c.

p

d.

p or q

Question number: 2

» Correlation and Regression

MCQ▾

Question

If all the plotted points in a scatter diagram lie on a single line, then the correlation is

Choices

Choice (4) Response

a.

Perfect positive

b.

Either Perfect Negative or Perfect Positive

c.

Perfect negative

d.

Question does not provide sufficient data or is vague

Question number: 3

» Correlation and Regression

MCQ▾

Question

If the plotted points in a scatter diagram are evenly distributed, then the correlation is

Choices

Choice (4) Response

a.

Negative

b.

Positive

c.

Zero

d.

All of the above

Question number: 4

» Correlation and Regression

MCQ▾

Question

When r = 1, all the points in a scatter diagram would lie

Choices

Choice (4) Response

a.

On a straight line directed from lower left to upper right

b.

On a straight line

c.

On a straight line directed from upper left to lower right

d.

All of the above

Question number: 5

» Correlation and Regression

MCQ▾

Question

If there are two variables x and y, then the number of regression equations could be

Choices

Choice (4) Response

a.

2

b.

Any number

c.

3

d.

1

Question number: 6

» Correlation and Regression

MCQ▾

Question

Scatter diagram helps us to

Choices

Choice (4) Response

a.

Compute the extent of correlation between two variables

b.

Find the nature correlation between two variables

c.

Obtain the mathematical relationship between two variables

d.

None of the above

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