Practice30Create account

A cricket player scored runs in 6 innings: 45, 0, 78, 45, 60, 45.
If his coach removes the 'duck' (the 0) from the record, by how much does the MEAN increase?

Class 9Measures of Central TendencyStatistics and Probability
  • A9.1
  • B10.1
  • C18.2
  • D8.1

Step-by-Step Solution

Original sum = 45+0+78+45+60+45 = 273, mean = . After removing 0: sum = 273, count = 5, mean = . Increase = 54.6 - 45.5 = 9.1.
Answer: A) 9.1

Master this chapter in 30 minutes a day.

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

Practice 5 Similar Questions Free →

All Measures of Central Tendency practice questions

More Class 9 Measures of Central Tendency practice

The frequency table shows runs scored by students in a quiz: Score 2 occurs 3 times,…Nine numbers have a mean of 20. Two more numbers are added and the new mean of all 11…A delivery boy in Pune notes the parcels delivered over 5 days: 8, 11, 8, 13, 8. Which…If the mean of the observations 2, 5, 7, a, 11, b is 7, and it is also known that a = b…The histogram-style bar chart shows daily temperatures (°C) recorded over 5 days. Using…