HOW TO PASS AS 91266

1. HOW TO PASS AS 91266 EVALUATING STATISTICAL REPORTS

2. TICK SHEET

3. VARIABLES • CLASSIFY AS: • CATEGORICAL • ORDINAL • QUALITATIVE • NUMERICAL • AND • EVALUATE WRT PURPOSE • DESCRIBE • LIST AT LEAST 3 OF THE ACTUAL VARIABLES MEASURED

4. POPULATION MEASURES DESCRIBE EVALUATE ADVANTAGES DISADVANTAGES SUGGESTIONS OF WHICH IS THE BEST TO HAVE USED FOR THIS DATA. • MEAN • MEDIAN • MODE • QUARTILES • STANDARD DEVIATION

5. SAMPLING METHODS DESCRIBE EVALUATE ADVANTAGES DISASVANTAGES SUITABILITY WRT PURPOSE • PROBABILITY SAMPLES • Systematic • Cluster • Stratified • Simple Random • NON-PROBABILITY SAMPLES • Person in the Street • Self-Selected • Quota sampling

6. SAMPLE SIZE DESCRIBE EVALUATE WRT ORIGINAL POPULATION SIZE ALLOWABLE SAMPLING ERROR PURPOSE OF REPORT

7. SURVEY METHODS DESCRIBE EVALUATE ADVANTAGES AND DISADVANTAGES WRT PURPOSE OF REPORT • FACE TO FACE INTERVIEW • TELEPHONE SURVEY • COMPUTER-ASSISTED SURVEY • SELF-ADMINISTERED SURVEY • CLUSTER GROUPS • PAPER QUESTIONNAIRE • WEB-BASED QUESTIONNAIRE

8. SAMPLING ERRORS DESCRIBE EVALUATE INCREASING SAMPLE SIZE TENDS TO REDUCE SAMPLING ERROR RECOMMEND A DIFFERENT SAMPLING METHOD RECOMMEND HOW TO CHOOSE A MORE REPRESENTATIVE SAMPLE • SAMPLING ERROR IS AFFECTED BY: • SAMPLE SIZE • SAMPLE DESIGN • VARIABILITY WITHIN THE POPULATION

9. NON-SAMPLING ERRORS DESCRIBE EVALUATE EXPLAIN HOW THEY OCCURRED DISCUSS WAYS TO REDUCE SAMPLING ERRORS • COVERAGE ERROR • RESPONSE ERRORS • NON-RESPONSE ERRORS • PROCESSING ERRORS • ANALYSIS ERRORS.

10. NON-SAMPLING ERRORS describe evaluate If the excluded or under-represented group is different, with respect to survey issues, then bias will occur. This creates bias because individuals with strong opinions about the survey issues or those with substantial knowledge will tend to be over-represented. Bias can occur because respondents may tend consistently to have views that are more extreme than those of the population in general. Bias will occur. • The wording of questions, the order in which they are asked and the number and type of options offered can influence survey results. • Answers given by respondents do not always reflect their true beliefs because they may feel under social pressure not to give an unpopular or socially undesirable answer. • Answers given by respondents may be influenced by the desire to impress an interviewer. • If people who refuse to answer are different, with respect to survey issues, from those who respond .This can also happen with people who are never contacted and people who have yet to make up their mind.

11. FINDINGS OF THE SURVEY DESCRIBE EVALUATE

12. SUMMARY

13. REMEMBER!

14. How to get a/ m / e