Practice30Create account

A shop's monthly sales (₹ lakh) for six months were 12, 15, 18, 14, 20 and 23. What is the third 3-month moving average?

Competition practiceStatistics
  • A17.33
  • B15.67
  • C19
  • D15

Step-by-Step Solution

The moving averages use months 1–3, 2–4, 3–5, … The third is . (15.67 is the second one.)
Answer: A) 17.33

Master this topic in 30 minutes a day.

Don't just memorise the answer — build a daily practice habit.

Practice 5 Similar Questions Free →

All Statistics practice questions

More Statistics practice

A car covers three equal stretches of a highway at 30 km/h, 40 km/h and 60 km/h. What is…Four numbers have a mean of 25. When a fifth number is included, the mean goes up by…Students in sections A, B and C are in the ratio 2 : 3 : 5, and their mean marks are 60,…The average age of an 8-member committee is 40 years. A member aged 55 retires and is…Two positive numbers have an arithmetic mean of 10 and a harmonic mean of 6.4. What is…