You're confusing sample size with population size...
Posted on: October 8, 2019 at 08:03:27 CT
zounami MU
Posts:
65257
Member For:
9.99 yrs
Level:
User
M.O.B. Votes:
0
The sample is a subset of the population, and the size of the sample determines the margin-of-error.
18 samples from a population of (65) P5 schools should yield an acceptable MoE for this purpose.