Given a certain population there are various ways in which a sample may be drawn from it. The chart below illustrates this point:

Figure 1

In Judgemental Sampling the sample is selected according to the judgement of the investigators or experts. Hence, there is a certain degree of subjectivity in the selection.

For example, the population under study may be people living in rented accommodation in Hyderabad. The investigator may choose as a sample, a certain number of his friends in Hyderabad living in rented accommodation. He may exercise all care in attempting to make the sample representative of the population.

But we cannot use Statistical Theory to find out how good the results of such a sampling are. Hence, we will concern ourselves mainly with Random Sampling, where every element of the population has a known chance of being included in the sample.

Posted Date: 9/15/2012 2:56:52 AM | Location : United States

Ask an Expert

Related Discussions:- Types of sampling, Assignment Help, Ask Question on Types of sampling, Get Answer, Expert's Help, Types of sampling Discussions

Write discussion on Types of sampling
Your posts are moderated

Write your message here..

Related Questions

Detect sources of error, how detect sources of error in sample survey how detect sources of error in sample survey

Regression and anova, The first step in this case is to ensure that you ar... The first step in this case is to ensure that you are adequately clear on the General Linear Model and its relationship to both ANOVA and regression. The distinction is approxim

Coefficient of variation, Coefficient of Variation The standard dev... Coefficient of Variation The standard deviation discussed above is an absolute measure of dispersion. The corresponding relative measure is known as the coefficient of vari

Arithmetic mean, Arithmetic Mean   The process of computing Arithmetic M... Arithmetic Mean   The process of computing Arithmetic Mean in the case of individual observations is to take the sum of the values of the variable and then divide by the number

BIVARIATE FREQUENCY , MARKS IN LAW :10 11 10 11 11 14 12 12 13 10 MARKS IN ... MARKS IN LAW :10 11 10 11 11 14 12 12 13 10 MARKS IN STATISTICS :20 21 22 21 23 23 22 21 24 23 MARKS IN LAW:13 12 11 12 10 14 14 12 13 10 MARKS IN STATISTICS:24 23 22 23 22 22 24 2

Dominant strategy equilibrium, Consider the following game: (a) If ... Consider the following game: (a) If (top, left) is a Weakly Dominant Strategy Equilibrium, then what inequalities must hold among (a, ..., h)? (b) If (top, left) is a Na

Confidence interval, for this proportion, use the +-2 rule of thumb to dete... for this proportion, use the +-2 rule of thumb to determine the 95 percent confidence interval. when asked if they are satisfied with their financial situation, .29 said "very sat

Sampling, ghjkg ghjkg

Classification of universe, Classification of Universe The universe may... Classification of Universe The universe may be classified either on the basis of number of units and on the basis   of existence of units as is clear from the following chart :

QUARTILE DEVIATION, Examples of grouped, simple and frequency distribution ... Examples of grouped, simple and frequency distribution data