ACCA Applied Knowledge (BT, MA, FA) · Management Accounting (MA)

Data analysis and statistical techniques

10 practice questions, each with the answer and an explanation.

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All 10 questions

  1. A researcher wants a sample from a population of employees in which each department is represented in proportion to its size. Which sampling method is this?
  2. Which of the following sampling methods is a non-probability method?
  3. The monthly sales (in £000) for five months are 12, 15, 11, 15, 17. What are the mean and the median?
  4. The correlation coefficient between advertising spending and sales is calculated as +0.92. What does this indicate?
  5. A regression of total cost (y, in £) on units produced (x) gives y = 12,000 + 3.5x. What is the forecast total cost for 4,000 units?
  6. A coefficient of determination (r²) of 0.64 has been found for a regression of sales on advertising. Which interpretation is correct?
  7. A price index with a base year of 100 stood at 125 last year and stands at 140 this year. By what percentage have prices increased between last year and this year?
  8. A time series has the following quarterly sales trend values: Q1 200, Q2 210, Q3 220, Q4 230. The seasonal variation for Q3 is +15 (additive model). What is the forecast for Q3 if the trend for that q…
  9. Which of the following is the most suitable spreadsheet feature for checking whether a cell showing total profit has been calculated from the correct inputs?
  10. A company has 5 observations of output (x, in thousand units) and total cost (y, in £000): (1, 14), (2, 18), (3, 22), (4, 25), (5, 31). Using the least squares method (Σx = 15, Σy = 110, Σxy = 371, Σx…

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