The value of 30+40−50 is .
Find the mode of the following frequency distribution: Marks10−2020−3030−4040−5050−60Frequency1235452513
Find the value of f if the mean of the following distribution is 25.2.
If the mean of the following distributionis find the value of p:
Class
0-10
10-20
20-30
30-40
40-50
Frequency
8
p
12
13
10