Question

1492
The table, given below, shows the frequency
distribution of the weekly wages of the
employees of a company :​

Answer 1

Answer:

Class−mark

x

i

d

i

=x

i

−A u

i

=

h

d

i

f

i

f

i

×u

i

1000−2000 1500 −2000 −2 25 −50

2000−3000 2500 −100 −1 45 −45

3000−4000 3500=A 0 0 504 0

4000−5000 4500 1000 1 30 30

∑f

i

=150 ∑f

i

u

i

=−65

⇒ Required mean =A+h

∑f

i

∑f

i

u

i

=3500−

150

65

×1000

=3500−433.33

=Rs.3066.67

Hence, the mean of the weekly wages is Rs.3066.67