Answer at the earliest i have exam tomorrow.

question:

from the chapter statistics there exist three methods of mean: direct, assumed and step deviation.

i have a confusion : which method should i apply?

as in exam you will be given use *appropriate* method. how should i know the method. is it fixi , fidi or fiui

Aprobability experiment is conducted in which the sample space of the experiment is s={7,8,9,10,11,12,13,14,15,16,17,18}, event f={7,8,9,10,11,12}, and event g={11,12,13,14}. assume that each outcome is equally likely. list the outcomes in f or g. find p(f or g) by counting the number of outcomes in f or g. determine p(f or g) using the general addition rule.