Statisticsmedium · Past Paper
The mean weight of 6 boys is 48 kg. If one boy weighing 40 kg leaves, what is the new mean?
A49.6 kg
B50 kg
C48.5 kg
D47 kg
✓ Correct Answer: A — 49.6 kg
Total weight = 6 * 48 = 288. New Total = 288 - 40 = 248. New Mean = 248 / 5 = 49.6 kg.
Share this question
More from Statistics
- A jar contains 2 red and 3 blue marbles. What is the probability of picking a blue marble?
- Which measure is most affected by extreme values (outliers)?
- What is the probability of getting a 5 on at least one die when two dice are thrown?
- If the mode of a data is 18 and the mean is 18, what is the median?
- The point of intersection of 'less than' and 'more than' ogives gives: