Question

Find the arithmetic mean of the following.
Cost of cars(in ₹)-30|35|20|10|5
Number of pens- 1 |2 |3 |4 |5

Answer 1

no.of pens cost of cars(fi) (xi) (fixi)

1 30 15 450

2 35 17.5 612.5

3 20 6.6 132

4 10 2.5 25

5 5 1 5

- -

100 1224.5

1224.5÷100=122450