NDA2017MathematicsStatisticsActual
A sample of 5 observations has mean 32 and median 33. Later it is found that an observation was recorded incorrectly as 40 instead of 35 . If we correct the data, then which one of the following is correct?
Options
- AThe mean and median remain the same
- BThe median remains the same but the mean will decrease
- CThe mean and median both will decrease
- DThe mean remains the same but median will decrease
Correct answer
B. The median remains the same but the mean will decrease
Step-by-step solution
Mean =32 , Median =33 It was recorded as 40 instead of 35 . So, sum will decrease and so mean. Median remains same.