Research Methodology
Research Methodology is a Economy concept from the MPSC syllabus, tested in 4 past MPSC questions (2020). Below are those real questions with their correct answers and explanations, plus the concepts worth being comfortable with first.
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उताऱ्यातील मध्यवर्ती कल्पना पुढीलपैकी कोणती आहे? The Central Idea of the passage is concerned with :
The whole passage defines non-probability (deliberate, purposive, judgement) sampling, discusses its risk of bias and where it is still used, and gives quota sampling as an example. Its central idea is non-probability sampling.
गैर-संभाव्यता नमुना पद्धती कोणत्या नावाने ओळखली जात नाही? Non-Probability Sampling is NOT known by this name :
Non-probability sampling includes purposive, quota, and convenience sampling. Other terms like random sampling belong to probability sampling.
गैर-संभाव्यता नमुना आराखड्यामध्ये संशोधकाच्या निवडीचं स्थान महत्त्वपूर्ण का असतं? Why is the researcher's judgement vital in the non-probability sampling design ?
In non-probability sampling, the researcher's subjective judgment, expertise, and discretion are vital because samples are chosen deliberately rather than randomly.
मुद्दाम निवडलेल्या नमुन्याच्या विश्लेषणावर आधारित निष्कर्ष विश्वसनीय असू शकतात. जर : Results obtained from an analysis of a deliberately selected sample may be reliable if :
(a)संशोधक पूर्वग्रहदूषित नसतील तर.
(b)संशोधक अनुभवी असतील तर.
(c)संशोधकांनी अनुकूल नमुना निवडला तर.
(d)संशोधकांनी सांख्यिकी पद्धती वापरल्या तर.
Results from a deliberately selected (purposive/quota) sample can only be reliable if the researcher is unbiased (a) and experienced (b). Statistical methods alone cannot correct a biased purposive sample.