Question

find the arithematic mean of the following data
cost of pen(in ruppee) 30 35 20 10 5
number of pens 1 2 3 4 5

Answer 1

Answer:

15

Step-by-step explanation:

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cost of pen(in rupees) (X) 30 35 20 10 5

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number of pens (f) 1 2 3 4 5

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fx 30 70 60 40 25

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£fx= 225

£f= 15

mean = £fx / £f

= 225/15

=15

the arithmetic mean of the data = 15