Question

13 PPH4801/MPHDHM9 Jan/Feb 2015 QUESTION 5 5 1 Provide the correct answerls Indicate from the list the varnous types of non- random sampling procedures a Haphazard/convenience b Cluster sampling c Quota sampling d Strathed sampling e Volunteer sampling f Snowbail sampling g Purposive sampling h Systematic sampling Descrbe briefly the advantages and disadvantages of self-administered questionnaires 5 2 (10) The charactenstics which one measures are referred to as vanables classified according to their scale of measurement 53 Give examples of categorical and numencal vanables? Examples Categonical Nominal Ordinal Binary Numerical Discrete Continuous Examples 25] Subtotal to answer: [75] TOTAL: [100] UNISA 2014

Answer 1

Answer: The types of non random sampling procedures are:quota sampling, convenience sampling, purposive sampling, and snowball sampling.

Answer: Advantages are:

• Cost effective
• Practical
• Speedy results.

Disadvantages are:

• Lack of conscientious response
• Difference in understanding and interpretation
• Some questions difficult to analyse.

The example of categorical variables are: Race, sex educational qualification.

The example of discrete variables are such as probability numbers 1,2,3 etc.