篩選結(jié)果 共找出56題

A firm which bottles shampoo selects some filled bottles for examination.The procedure used is to select a random starting point x(xth bottle filled) and every bottle at an interval of y is then chosen for examination.What is this type of sampling known as?

A

Multi-stage

B

Random

C

Systematic

D

Stratified

The following statements are often made about 'simple random sampling'.

(i) It ensures a representative sample.

(ii) It eliminates selection bias.Which of the following is always true?

A

(i) only

B

(ii) only

C

Both (i) and (ii)

D

Neither (i) nor(ii)

An accountant has to check a sample of invoices. The invoices are divided into three groups, by value as follows:"under ￡100、'￡100 - ￡500' and 'over ￡500'. Samples are then selected randomly from each group.Which ONE of the following sampling methods is involved?

A

Cluster

B

Multi-stage

C

Quota

D

Stratified

A sample of 10% of ACCA students is required. Which ONE of the following methods will provide the best simple random sample?

A

Select every tenth ACCA student to arrive at their college/institute on one specific day.

B

Select randomly, using random number tables, one in ten of every ACCA class.

C

Select 10% of colleges/institutions providing ACCA courses, then from these chooseall students who are registered with ACCA.

D

Select 10% of all students registered with ACCA, giving each a chance of 0.1 of being picked.

Which of the following describes Secondary data?

A

data that does not provide any information

B

data collected for another purpose

C

data collected specifically for the purpose of the survey being undertaken

D

data collected by post or telephone, not by personal interview

When gathering information you would use both internal sources of information and external sources of information.Which of the following are examples of external information?

(i) Trade references.

(ii) Sales representatives' knowledge.

(iii) A credit agency report

(iv) Bank references.

A

(ii) only

B

(ii), (iii) and (iv) only

C

All of the above

D

(i), (iii) and (iv) only