Advantages And Disadvantages Of Random Sampling

Education , Statistics
Merits Or Advantages Of Random Sampling

The main advantages of random sampling can be expressed as follows:

1. Simple Method

Simplicity is one of the major advantage of this sampling method. Random sampling is very simple method of data collection. It does not require any special skill or knowledge to study the items.

2. Time And Money Saving

It takes very short time to complete the survey as it does not require to examine the whole universe. So, it is time and money saving technique.
3. No Personal Bias

In this method, selection of item depends on chance. So, investigator cannot select any unit as per his wish. So, it is free of personal bias.

4. Error Detection

Under random sampling, statistical errors can be easily detected.

advantages disadvantages random sampling
Demerits Or Disadvantages Of Random Sampling

Some notable drawbacks of random sampling can be expressed as follows:

1. Difficult To Implement

Random sampling is very difficult to implement in such cases like scattered universe, heterogeneous population and widely dispersed items.

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2. Higher Rate Of Error

It has larger error rate than stratified sampling.

3. Applicability 

Random sampling is not applicable without the complete and up to date list of  all items in the universe.

4. Monotony

Investigator may suffer from monotony because of recitative work for a long time while collecting data.
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Disadvantages Of Sampling Method

Education , Statistics
Major drawbacks or disadvantages of sampling method of data collection can be studied as follows:

1. Inadequacy Of Sample

Sampling method is not suitable if the universe is small and sample size is inadequate. Census method is appropriate for small and heterogeneous items.

2. Misleading

If sampling is conducted by unskilled personnel, it may defunct the process and mislead the result which leads to wrong conclusion.

3. Specialized Knowledge

Special knowledge is required to carry out sampling task. Proper analysis is not possible without the knowledge of good sampling.
disadvantages of sampling

4. Chance Of Error

There is a high chance of statistical error in this method.

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5. Personal Bias

There is a chance of personal bias in this technique of collecting information because it is a judgmental task of the investigator. 

6. Lack Of Proper Size

It is very complex task of find out proper sample size for conducting survey.
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Advantages Of Sampling Method

Education , Statistics
Main advantages or benefits of sampling method of data collection can be studied as follows:

1. Less Costly

In census method, each and every item of the universe is studied. But in sampling method, information is obtained from small portion of universe. So, it is less costly method of data collection.

2. Less Time

Sampling method consumes less time and effort than census method of data collection.

3. Detailed Information

Sampling helps to obtain detail information by studying a small part of the universe.
advantages of sampling
4. Accuracy And Reliability

Sampling helps to obtain accurate and reliable information because it has limited area of operation.


5. Suitability

Sampling is suitable for small organization with limited resources. Research can be conducted with the small portion of the area.

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6. Applicable For Large Universe

Census method is not applicable for the research of large or infinite size. So, sampling is suitable for the research of large universe.

7. Checking Of Census

Sampling can be used to check the accuracy of census enquiry also.
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Advantages And Disadvantages Of Census Method

Education , Statistics
Main advantages and disadvantages of census method of data collection can be highlighted as follows:

Advantages/Merits Of Census Method

1. Accuracy And Reliability

Census method ensures higher degree of accuracy than other techniques. It provides complete information because each and every item is investigated carefully. So, it is very reliable method of data collection.

2. Suitability

This method is effective if the universe is small.

3. Intensive Study

Census method completely examines each unit and gathers important data for intensive study.

4. Indispensable 

Census method is indispensable in certain cases where other methods cannot provide reliable and accurate result.

5. Heterogeneous Units

Census method is applicable to examine heterogeneous units.

advantages and disadvantages of census

Disadvantages/Demerits Of Census Method

1. Costly Method

It is very costly method of data collection.

2. Time Consuming

It consumes more time and labor to complete data collecting task.

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3. Unsuitability

This method is not applicable or suitable if the universe is large. It is suitable only for small universe.

4. Chance Of Errors

There is a high chance of statistical errors in this method.

Pros And Cons Of Census Surveys In Short

Pros:
- It provides the most reliable and accurate data than other survey methods
- It gives less biased result
- It is suitable for small population 

Cons:
- It requires more cost, time and effort to conduct census surveys
- It is not applicable if the population or universe is very large
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Advantages Of Protectionism

Business , Marketing
Main benefits or advantages of trade protectionism can be studied as follows:

1. To Protect Emerging Industries

Protectionism guards infant national industries from foreign firms. It is a defensive measure which helps the newly established domestic business to grow and well-flourished.

2. To Create Job Opportunity

Protectionism helps to create employment opportunities for local people. If local industries are well-flourished then job opportunities are created in the country.

3. To Prevent Dumping

Foreign producers export their goods at very low price and attract customers in order to capture the market. So, protectionism is useful to protect against dumping.

                 
advantages of protectionism

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4. Correction Of Balance Of Payment

Protectionism policy helps to correct balance of payment of the nation by discouraging importing and encouraging exports.

5. Preserving National Resources

Protectionism restricts the exports of national resources of the country. It helps to limit the over exhaustion of resources. 
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Disadvantages Of Free Trade

Business , Marketing
Major drawbacks or disadvantages of free trade can be highlighted as follows:

1. Economic Dependency

Because of free trade, economic dependency with foreign countries is encouraged which negatively affects the self-sufficiency of the country.

2. Unfavorable Effects On Domestic Industries

Free trade hampers the development of local industries because they cannot compete with large foreign industries. It effects the industrialization policy of the state.

3. Exhaustion Of Resources

Because of free trade policy, large quantity of natural resources ( in the form of raw materials) are exported without barrier. So, it exhausts the resources of developing countries.

            disadvantages of free trade

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4. Import Of Harmful Products

There is high chance of import of harmful products in the country because of barrier free trade policy.

5. Unequal Distribution Of Gain

Free trade does not promote equal distribution of trade gain among the countries. 
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