The lowest value of a set of observations is 4.5 and their range is 10.9. Arithmetic mean is found to be 19.9 and median found to be 15.6. Which of the following statements is correct ?
1
Arithmetic mean is wrong, but the median is correct
2
Arithmetic mean is right, but the median is wrong
3
Both arithmetic mean and median are wrong
4
Both arithmetic mean and median are right