IGCSE Development Studies: Specimen Questions with Answers 39 - 40 of 98

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Research Methodology

Question 39 (4 of 7 Based on Passage)

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Distinguish Between Random Sampling and Non-Probability Sampling

Explanation

Distinguish between Random Sampling and Non-Probability Sampling
S. no

Random Sampling

Non-probability sampling

1.

It is the method in which elements of the population get an equal opportunity to be selected as a representative sample.

It is a method in which elements of the population are not pre-specified and have unequal opportunity of being a sample

2.

Selection process is involved is random sampling

Selection process involved is arbitrary

3.

Results are unbiased due to conclusive nature

Results are biased due to exploratory nature

4.

Basis of inference in statistical in nature

Basis of inference is analytical in nature.

Question 40 (5 of 7 Based on Passage)

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What are the data collection methods?

Explanation

Data is the basic input required for any decision-making process. Data collection refers to the systematic procedure of collecting detailed information about a stated objective of research from the given sample under controlled settings. It is used as a technique to gather useful information to establish a factual basis for decision making.

There Are Two Methods of Data Collection

  • Primary data collection method- Primary data are the original observations collected by the researcher or his agents for the first time. It is the first-hand data collected by the researcher directly from the main source.
  • Secondary data collection method- Secondary data is the data gathered and recorded by someone else prior to and for a purpose other than the present project. Secondary data has been collected previously for some other purpose. It involves less time, cost, and effort.