Question

For some data, mean is 45. If∑xidi=0 and ∑fi=50 then assumed mean A= (a)50 (b)45 (c)46 (d)44​

Answer 1

Answer:

d) 44 is the correct answer

Answer 2

Answer:

Step-by-step explanation:

The mean of a data is  

x

=35.8. If ∑f

i

​

u

i

​

=4,∑f

i

​

=50 and c=10, then find the assumed mean(A).

Medium

Solution

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Here mean of the data is  

x

=35.8. Also ∑f

i

​

u

i

​

=4, ∑f

i

​

=50 and c=10 is given

By Formula,

x

=A+

∑f

i

​

∑f

i

​

u

i

​

​

×c

Substituting the values in the formula, we get

35.8=A+

50

4

​

×10

∴35.8−

5

4

​

=A

∴35.8−0.8=A

∴A=35