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Time series and index numbers - CCEA GCSE Statistics quiz quiz

14questions. Pick an answer and you'll see why right away.

  1. Moving averages are used on a time series mainly to:

  2. For quarterly data, the correct moving average to use is a:

  3. The first four-point moving average of 10,14,12,810, 14, 12, 8 is:

  4. The general long-term direction of a time series is called the:

  5. A pattern that repeats every year, such as higher sales each summer, is called:

  6. Each moving average should be plotted at the:

  7. An index number compares a value with the:

  8. A price was £40 in the base year and is £50 now. The price index now is:

  9. An index number of 95 means the value has:

  10. The RPI and CPI are used to measure:

  11. Two items have indices 110 and 130 with weights 3 and 1. The weighted index is:

  12. A weighted index number is used because:

  13. A chain base index compares each year with the:

  14. Extending a trend line far beyond the data to predict is: