4 Errors in Survey Samples

A very important use of the CLT is for getting an idea of the errors we are likely to encounter in Survey Sampling. This idea is explored at length in this part of the 6th Lecture

S1 Estimating Sampling Error

S2 Probability Versus Confidence

S3: Selecting Samples Size for Desired Confidence

S4 Desired Confidence Vasries with Application, and Cost

S5 Pilot Samples are Useful