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A regression equation Y = a + bX is used to forecast the value of Y for a given value of X. Which of the following increase the reliability of the forecast? (i) A correlation coefficient numerically close to 1 (ii) Working to a higher number of decimal places of accuracy (iii) Forecasting for values of X outside the range of those used in the sample (iv) A large sample is used to calculate the regression equation

A

(i) only

B

(i) and (ii) only

C

(i) and (iii) only

D

(i) and (iv) only

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Chapter14Forecasting

(i) A correlation coefficient close to +1 or -1 indicates a strong linear relationship between X and Y. The regressihe methods used lend themselves to such precision.(iii) Forecasting for values of X outside the range of the original data leads to unreliable estimates, because there is no evidence that the same regression relationships hold for such values.(iv) The regression equation is worthless unless a sufficiently large sample was used to calculate it. In practice, samples of about ten or more are acceptable.(i) and (iv) increase the reliability of forecasting.

多做几道

Which of the following statements about management accounting information is/are true?

(i) They must be stated in purely monetary terms.

(ii) Limited companies must, by law, prepare management accounts.

(iii) They serve as a future planning tool and are not used as an historical record.

A

(i), (ii) and (iii)

B

(i) and (ii)

C

(ii) only

D

None of the statements is true

Which of the following statements is/are correct?

(i) A management control system is a term used to describe the hardware and software used to drive a database system which produces information outputs that are easily assimilated by management.

(ii) An objective is a course of action that an organisation might pursue in order to achieve its strategy.

(iii) Information is data that has been processed into a form meaningful to the recipient.

A

(i), (ii) and (iii)

B

(i) and (iii)

C

(ii) and (iii)

D

(iii) only

Good information should have certain qualities. Which of the following are qualities of good information?(i) Complete(ii) Extensive(iii) Relevant(iv) Accurate

A

(i), (ii) and (iii)

B

(i), (iii) and (iv)

C

(ii) and (iv)

D

All of them

Monthly variance reports are an example of which one of the following types of management information?

A

Tactical

B

Strategic

C

Non-financial

D

Operational

Which of the following statements is/are correct?

(i) Information for decision-making should incorporate uncertainty in some way

(ii) The data used to prepare financial accounts and management accounts are the

A

(i) is true and (ii) is false

B

(ii) is true and (i) is false

C

Both are true

D

Both are false

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