Question

Hey mate Ans. me how to ans.. the All types of mean...(direct, method and all)... Hope uh will ans.....ÑØ ẞPÁM....​

Answer 1

I have gave all the for mean below and now I will explain it

First for direct method you need to find ( summation of fi xi) to find this you have to multiply the frequency with class mark and then add all the values of fi xi to get summation of fi xi . And for ( summation of fi )you have to add all the frequency.

Second for assumed mean method you have to find the ( summation of fi di ) to find this first you have to find (di), so you have to subtract xi by its middle value which is called as A [di=xi-A] and after finding di multiply the fi with di and then total it to get summation of fidi.

The third one is step deviation method in this you have to find the ( summation of fiUi ) for this you have to find the Ui, you can find Ui by dividing di/h and then multiply the fi with Ui and then at last add all the values of fiUi to get summation of fiUi

Hope this will be helpful