Question

find the mean of the following data x-5,15,25,35,45 frequency-4,8,13,12,6​

Answer 1

Answer:

Mean = 25

Step-by-step explanation:

Mean = ∑ fx / ∑ f

= ( 6×5 + 4×15 + 9×25 + 6×35 + 5×45 ) / ( 6 + 4 + 9 + 6 + 5 )

= ( 30 + 60 + 225 + 210 + 225 ) / 30

= 750 / 30

= 25