NECO Past Questions and Answers - Page 180

896.

The following are advantages of standard deviation EXCEPT that it

A.

Has greater practical utility in sampling

B.

Is a good measure of dispersion since all the values are used in its calculation

C.

Is important and useful in the analysis of T- Test

D.

Is not a sound mathematical index

E.

Is the most popular measure of dispersion in distribution

Correct answer is A

No explanation has been provided for this answer.

897.

Two forces A and B act at a point. If their resultant is [given by] (B - A) in the direction of B, then

A.

A and B are equal

B.

A is greater than B

C.

the angle between A and B is 0°

D.

the angle between A and B is 90°

E.

the angle between A and B is 180°

Correct answer is E

No explanation has been provided for this answer.

898.

Arrange the following in the order of their increasing frequency.

I. Visible light
II. Gamma rays
III. Radio waves
IV. Infra-red radiation
V. Ultra-violet radiation

A.

I, II, III, IV, V

B.

II, III, IV, V, I

C.

III, IV, V, I, II

D.

IV, III, I. V, II

E.

III, IV, I,V, II

Correct answer is E

No explanation has been provided for this answer.

899.

Find the arithmetic mean of the following set of scores 12, 4, 2, 8, and 14

A.

8

B.

10

C.

12

D.

14

E.

30

Correct answer is A

No explanation has been provided for this answer.

900.

In a solo proprietorship, decisions are made by the

A.

Board of directors

B.

Government

C.

Management

D.

Owner

E.

Shareholders

Correct answer is D

No explanation has been provided for this answer.