Upload
sushovit-rout
View
138
Download
0
Embed Size (px)
Citation preview
1SAMPLING DISTRIBUTION
ISME PGDM 2015-2017
2 Contents What is Sampling? Types of Sampling Sampling Distribution Sample Error
ISME PGDM 2015-2017
3
ISME PGDM 2015-2017
4 What is Sampling?Sampling is the process of selecting a portion generally small portion of units (e.g. people, organizations) from a population of interest so that by studying the sample we may fairly generalize our results back to the population from which they were chosen.
ISME PGDM 2015-2017
5 Types of Sampling
ISME PGDM 2015-2017
6
Probability/ Random Sampling
Simple Random Sampling
Systematic Sampling
Stratified Sampling
Cluster Sampling ISME PGDM 2015-
2017
7
Non-Random/ Non-Probability
Sampling
Convenience
Sampling
Judgement Sampling
Quota SamplingShopping-
Mall Intercept SamplingSnowball SamplingISME PGDM 2015-
2017
8Sampling DistributionA probability distribution of all possible means of samples is a distribution of the sample means. In statistical term this is known as Sample Distribution.
ISME PGDM 2015-2017
9
ISME PGDM 2015-2017
10 Sample ErrorThe standard deviation of the distribution of a sample statistic is known as the standard error of the statistic or Sample error.
𝑺𝒕𝒂𝒏𝒅𝒂𝒓𝒅𝒆𝒓𝒓𝒐𝒓 𝒐𝒇 𝒕𝒉𝒆𝒎𝒆𝒂𝒏(𝝈 𝒙)=
𝜎=𝑃𝑜𝑝𝑢𝑙𝑎𝑡𝑖𝑜𝑛𝑆𝑡𝑎𝑛𝑑𝑎𝑟𝑑𝐷𝑒𝑣𝑖𝑎𝑡𝑖𝑜𝑛𝑛=𝑆𝑎𝑚𝑝𝑙𝑒𝑆𝑖𝑧𝑒
ISME PGDM 2015-2017
11
THANK YOU!!
ISME PGDM 2015-2017