Mathematics
Related Questions
Construct the following frequency distribution :
Class Frequency 0 - 5 13 6 - 11 10 12 - 17 15 18 - 23 8 24 - 29 11 The upper limit of the median class is
17
17.5
18
18.5
For the following distribution :
Class Frequency 0 - 5 10 5 - 10 15 10 - 15 12 15 - 20 20 20 - 25 9 The sum of lower limits of the median class and modal class is
15
25
30
35
The mean of 20 numbers is 18. If 3 is added to each of the first ten numbers, find the mean of new set of 20 numbers.
The average height of 30 students is 150 cm. It was detected later that one value of 165 cm was wrongly copied as 135 cm for the computation of mean. Find the correct mean.