1. Welcome to class of Sampling - Dr. Satyendra Singh

2. Introduction to Sampling Sampling error Non-sampling error (systematic) Sample bias –non-probability samples –defining the population –sample frames –random and Systematic sampling –random digit dialing –executing the sample –efficiency

3. Total Error poor Logic improper Use of Statistics inadequate sample size inadequate sample design poor data collection improper design poor problem formulation poorly written report

4. Defining the Population what are population units? population boundaries –geography –demographics –usage –attitude

5. Sample Frames finding a list problems with lists –ineligibles –duplications –omissions developing a list use of intercept methods

6. Sampling Designs Nonprobability –convenience –judgment –quota –snowball Probability –simple Random –stratified –cluster systematic (nth) area

7. Random and Systematic Sampling Tables of random numbers –what are they? –how are they generated / tested? –how are they used? Systematic sampling –wow to use?

8. Telephone Sampling Dialing working exchanges –why inefficient Using purchased lists –why not complete

9. Executing the Sample reducing non-located reporting the sample reducing refusals