050 sampling theory

[object Object],[object Object],[object Object],Concept of sampling

[object Object],[object Object],[object Object]

29 Population Sample A sample is a subset of a larger population of objects individuals, households, businesses, organizations and so forth. Sampling enables researchers to make estimates of some unknown characteristics of the population in question A finite group is called population whereas a non-finite (infinite) group is called universe A census is a investigation of all the individual elements of a population

[object Object],[object Object],[object Object],[object Object],[object Object],Why sampling

Classification of Sampling Techniques Probability Sampling Techniques Stratified Sampling Cluster Sampling Simple random Sampling Sampling Techniques Non-probability Sampling Techniques Convenience Sampling Judgment Samples Quota Sampling Snowball Sampling Systematic Sampling

[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],A T Y W B P G E S C K L G N Q B T G K Population Sample Population not uniform Wrong procedure ?

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],1 4 8 12 3 6 13 2 10 20 15 7 14 11 16 3 7 10 16 Population Sample Stratum 2 = even no. Stratum 1 = odd no.

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

050 sampling theory

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050 sampling theory