Q. 115.0( 1 Vote )

# The arithmetic me

For equal class intervals, we will solve by finding mid points of these classes using direct method.

We have got

Σfi = 92 + p and Σfixi = 2580 + 15p

mean is given by

( given: arithmetic mean is 50)

4600 + 50p = 2580 + 15p

50p – 15p = 2580 – 4600

35p = 2020

p = 11

Thus, p is 11.

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