Same chapter3 marksDifficulty: Medium
The prices of four commodities in the base year total ₹200 and in the current year ₹250. Find the simple aggregate price index.
Index Numbers and Moving Averages
3 marksDifficulty: Medium
What is a moving average and why is it used?
Original Khojo Papers practice question — not from a past board paper.
Answer
A moving average replaces each value of a time series by the average of it and a fixed number of neighbouring values. It is used to smooth out short-term fluctuations and seasonal variation so that the underlying trend becomes visible.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
The period chosen should match the period of the fluctuation being removed.
Related questions
From the same topic and chapter, at a similar level.
Same chapter3 marksDifficulty: Medium
Calculate the three-yearly moving averages for the series 2, 4, 6, 8, 10.
Index Numbers and Moving Averages
Same chapter3 marksDifficulty: Medium
Distinguish between Laspeyres' and Paasche's price index.
Index Numbers and Moving Averages
Same chapter2 marksDifficulty: Easy
What is an index number? State one of its uses.
Index Numbers and Moving Averages
Same subject3 marksDifficulty: Medium
In a class of 60 students, 35 play cricket, 28 play football and 12 play both. How many play neither?
Sets
Same subject3 marksDifficulty: Medium
Prove that cos 2A = 1 − 2sin2A.
Trigonometric Functions