IGCSE Development Studies: Specimen Questions with Answers 40 - 41 of 98

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Research Methodology

Question 40 (5 of 7 Based on Passage)

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“Error which arises due to only a sample being used to estimate the population parameter.” Explain the statement.

Explanation

“Error which arises due to only a sample being used to estimate the population parameter.” This statement is about sampling errors, Sampling errors refers to the difference between the sample and the population that exist only because of observation that happened to be selected for the sample. By increasing the size of the sample, the sampling error can be reduced. Sampling errors occur due to the inherent errors in the sample of the population.

Types of Sampling Error

Question 41 (6 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.

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