Systematic sampling, Applied Statistics

 

Systematic Sampling

In Systematic Sampling each element has an equal chance of being selected, but each sample does not have the same chance of being selected.

Here, the first element of the population is randomly selected to begin the sampling. But thereafter the elements are selected according to a systematic plan.

Example 

If the previous retailer uses systematic sampling she would proceed as follows:

She would randomly select one bill (or customer), say bill number 6. Thereafter she would select subsequent bills (or customers) according to a systematic plan. Say, she would select every fifth bill so that the selected bills (or customers) are bill numbers 6, 11, 16, 21 and so on.

Notice that the sample containing bill numbers 6, 7, 11, 16, ... will never be selected in that form.

The main advantage in using Systematic Sampling is that it requires less time and lower costs than Simple Random Sampling method. But by using Systematic Sampling method the problem of introducing an error into the sample is more.

 

Posted Date: 9/15/2012 2:59:17 AM | Location : United States







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

Write discussion on Systematic sampling
Your posts are moderated
Related Questions
Ask 3. Precision Manufacturing has a government contract to produce stainless steel rods for use in military aircraft. Each rod is required to be 20 millimeters in diameter. Each

Consider three stocks A, B and C costing $100 each. The annual returns on the three stocks have mean $5 and variance $10. a. Suppose that the returns on the three stocks are i.i

Jocko's Garage has been accused of insurance fraud. Data on estimates made by Jocko and another garage were obtained for 10 damaged vehicles (available in 'jockogarage.txt'). Here


solve problems

In this problem, we use the CSDATA data set, which is available in 'CSDATA.txt'. We do ne an indicator variable, say HIGPA, to be 1 if the GPA is 3.0 or better and 0 other- wise. S

Suppose that in the actual survey of 50 prospective customers, 6 subscribe to the 3 for all offer, what does this tell you about the previous estimate of the proportion of customer

use of quantitative techniques in public sector

how to get statistical quality control assignment in brief?

objective of the testing stochastic regression