Find the mean of the data given below.
|Marks obtained||5 - 15||15 - 25||25 - 35||35 - 45||45 - 55|
|No. of students||3||5||9||3||2|
In a continuous data, if Σfm = 720 and \(\overline x\) = 45, find the value of N.
If the mean (\(\overline x\)) = 14 + p, the number of terms (N) = 30 and ∑fx = 600 in a continuous series. Find the value of p.
if \(\overline x\) = 10 and N = 40, then find the value of ∑fx.
In a continuous series the average marks of some students is 40 and the sum of their marks is 1200. Then find the number of students.
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