Advantages of sampling, Applied Statistics

Assignment Help:

 

Advantages of Sampling

Why should we settle on a sample instead of studying the entire population?  Sampling has the following advantages over a census (study of the entire population):

1. The population may be  too large  to be studied in full.

For example, a manufacturer of wrist watches may find it impossible to locate all the buyers and obtain their opinions about the product. Instead, the manufacturer may ask the watch retailers to provide the buyers with a response form so that they can fill in their opinions and mail it to the manufacturer. Every buyer is not likely to respond, but those who do, may be treated as a sample from the population of all buyers.A study of a sample is usually cheaper than a study of the population.

2. Sampling usually provides information quicker than a census so that timely decisions can be taken.

3. Sampling involves less work as compared with a census. Hence, the chances of errors while processing the data are less.

4. In destructive testing sampling is the only available course.

For example, if a manufacturer wants to find out the average life of the pencil cell batteries manufactured by his plant, one way to do is to operate each cell until its life is over and record the life duration so that the average life may be computed. However, if every cell is used up this way, the manufacturer will not have any cells for customers. Hence, sampling is the way to determine average cell life in such a case.

5. Testing the entire population may not be possible. For example, if a manufacturer develops a possible remedy for the common cold, all those suffering from this ailment may not be willing to try the remedy. Hence, sampling is the only alternative.


Related Discussions:- Advantages of sampling

Assignment, wants to complete assignment for uk university which i need toy...

wants to complete assignment for uk university which i need toy submit latest by 10th october

Regression, why we use dummy variable

why we use dummy variable

Index number, "index number is an economic barometer" comment on this state...

"index number is an economic barometer" comment on this statement

Poisson distribution, Poisson Distribution The poisson Distribution  wa...

Poisson Distribution The poisson Distribution  was discovered  by French mathematician simon  denis  poisson. It is a discrete probability distribution. Meaning : In bi

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

Determine the maximum process variability, You are going to purchase a part...

You are going to purchase a part from a specialty vendor.  Your company needs a C p of at least 1.67 on a critical dimension of the part.  The dimensional specification for this p

Coefficient of variation, Coefficient of Variation or C.V. To compare t...

Coefficient of Variation or C.V. To compare the variability between or more series, coeffiecnt of variation is used, it is relative measure of dispersion, it innovated and used

T test, What is an example of a real life situation when I would use each o...

What is an example of a real life situation when I would use each of these test

Frequency distribution, Frequency distribution A frequency distribution...

Frequency distribution A frequency distribution is a series where a number of items with similar values are put in separate groups or bunches. In other words a frequency distri

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd