筛选结果 共找出65

A chemical process has a normal wastage of 10% of input. In a period, 2,500 kgs of material were input and there was an abnormal loss of 75 kgs.

What quantity of good production was achieved?

A

2,175 kgs

B

2,250 kgs

C

2,325 kgs

D

2,425 kgs

In a particular process, the input for the period was 2,000 units. There were no inventories at the beginning or end of the process. Normal loss is 5% of input. In which of the following circumstances is there an abnormal gain?

(i) Actual output = 1,800 units

(ii) Actual output = 1,950 units

(iii) Actual output = 2,000 units

A

(i) only

B

(ii) only

C

(i) and (ii) only

D

(ii) and (iii) only

In a process account, how are abnormal losses valued?

A

At their scrap value

B

The same as good production

C

At the cost of raw materials

D

The same as normal losses

A company needs to produce 340 litres of Chemical X. There is a normal loss of 10% of the material input into the process. During a given month the company did produce 340 litres of good production, although there was an abnormal loss of 5% of the material input into the process.How many litres of material were input into the process during the month?

A

357 litres

B

374 litres

C

391 litres

D

400 litres

The regression equation Y = 3 + 2X has been calculated from 6 pairs of values, with X ranging from 1 to 10. The correlation coefficient is 0.8. It is estimated that Y = 43 when X = 20. Which of the following are true?

(i) The estimate is not reliable because X is outside the range of the data

(ii) The estimate is not reliable because the correlation is low

(iii) The estimate is reliable

(iv) The estimate is not reliable because the sample is small

A

(i) and (ii) only

B

(i) and (iii) only

C

(ii) and (iv) only

D

(i) and (iv) only

In calculating the regression equation linking two variables, the standard formulae for the regression coefficients are given in terms of X and Y. Which of the following is true?

A

X must be the variable which will be forecast

B

It does not matter which variable is which

C

Y must be the dependent variable

D

Y must be the variable shown on the vertical

Which of the following is a feasible value for the correlation coefficient?

A

-2.0

B

-1.2

C

0

D

+1.2

Over an 18-month period, sales have been found to have an underlying linear trend of y = 7.112 +3.949x, where y is the number of items sold and x represents the month. Monthly deviations from trend have been calculated and month 19 is expected to be 1.12 times the trend value.What is the forecast number of items to be sold in month 19?

A

91

B

92

C

93

D

94

Based on the last 15 periods the underlying trend of sales is y = 345.12 - 1.35x. If the 16th period has a seasonal factor of -23.62, assuming an additive forecasting model, what is the forecast for that period, in whole units?

A

300

B

301

C

324

D

325

Unemployment numbers actually recorded in a town for the second quarter of the year 2000 were 4,700. The underlying trend at this point was 4,300 people and the seasonal factor is 0.92. Using the multiplicative model for seasonal adjustment, what is the seasonally-adjusted figure (in whole numbers) for the quarter?

A

3,932

B

3,956

C

5,068

D

5,109