NECO Past Questions and Answers - Page 175

871.

The difference between bar charts and histograms is that the former

A.

Are difference between bars adjoined to each other while the latter are separate bars divided Into sections

B.

Are line graphs while the latter are rectangular bars

C.

Are separate bars divided Into sections while the latter are line graphs

D.

Has bars adjoined to each other while the latter has separate bars

E.

Has bars separate from each other while the latter has bars adjoined to each other

Correct answer is E

No explanation has been provided for this answer.

872.

Electric charges on the surface of a conductor would be most evenly distributed if the shape of the conductor is

A.

conical

B.

cubical

C.

cylindrical

D.

parabolic

E.

spherical

Correct answer is C

No explanation has been provided for this answer.

874.

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.

875.

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.