Question

Step deviation method formula explain terms

Answer 1

Answer:

In step deviation method we have 6 Columns.Classes are written in the 1st column.

(xi)Class mark i.e addition of classes /2 is written in the 2nd column.3rd column=di=xi-A,here we assumed any one no.in the class mark's column and subtract it from the each class mark.4th column is UI=Di/g,here g means the G.C.D of all values of di ,it means the value from which we can divide all the values of di.5th column is frequency which has already given and 6th column is fi×ui.

Then we have to find the u bar =summesion of fiui/summesion of fi.

Then the last step is to find mean i.e X bar =A+u bar × g . That's it thanku