Ashish PatelAshish Patel asked 2 years ago
1 Answers
RaviRavi Staff answered 2 years ago

here test check simply means sampling. so these are precautions that should be taken during sampling in general. so 2nd point means for good sampling there should be unbiased selection, all items should have equal chance of selection, so that we come to know truth from remote corners of population. it can achieved by following, number all items in population serially then take out random number table, where random numbers are given, so select items as per numbers there.

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