JAMB Economics Past Questions & Answers - Page 223

1,111.

A large standard deviation is an indication of

A.

The size of the sample

B.

A wide spread around the mean

C.

A wide difference between the mean and the mode

D.

The difference between the highest and the lowest values

Correct answer is B

Standard deviation is a number used to tell how measurements for a group are spread out from the average (mean), or expected value. 

A high standard deviation indicates that the data points are spread out over a large range of values. 

1,112.

One of the assumptions of ordinal utility in consumer behaviour is that

A.

Consumers are irrational

B.

Marginal utility rises continuously

C.

Utility is measurable

D.

Utility can only be ranked

Correct answer is D

No explanation has been provided for this answer.

1,113.

In any set of data, median represents the

A.

Value that is most representative of the data

B.

Mid-position when the values are arranged in ascending or descending order

C.

Mid-position when the values are arranged randomly

D.

Difference between the highest and the lowest values when arranged in ascending order

Correct answer is B

No explanation has been provided for this answer.

1,114.

In order to increase revenue, the seller of a commodity whose demand is fairly elastic is advised to

A.

Increase price

B.

Reduce output

C.

Reduce price

D.

Retain price

Correct answer is C

No explanation has been provided for this answer.

1,115.

A change in demand for a normal good means

A.

A shift in the demand curve

B.

A change in the price changes

C.

A movement along a given demand curve

D.

A change in the price elasticity

Correct answer is A

No explanation has been provided for this answer.