Mathematics
The mean weight of 8 students is 45.5 kg. Two more students having weights 41.7 kg and 53.3 kg join the group. What is the new mean weight?
Related Questions
The mean of 5 observations is 15. If the mean of first three observations is 14 and that of the last three is 17, find the third observation.
The mean of 8 variates is 10.5. If seven of them are 3, 15, 7, 19, 2, 17 and 8, then find the 8th variate.
Mean of 9 observations was found to be 35. Later on, it was detected that an observation 81 was misread as 18. Find the correct mean of the observations.
A student scored the following marks in 11 questions of a question paper:
7, 3, 4, 1, 5, 8, 2, 2, 5, 7, 6.
Find the median marks.