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Selection bias occurs when certain individuals are more likely to be selected for a sample than others, leading to unrepresentative results. Random sampling with a well-defined sampling frame ensures that every individual in the population has an equal chance of being selected, thus minimizing bias. The sampling frame is a list of all individuals in the population, and using this frame with random sampling helps ensure the sample is unbiased and representative of the entire population. Option A is incorrect because selecting volunteers can introduce bias since volunteers are likely to have specific characteristics that differ from the general population. Option B is incorrect because relying on personal judgment introduces bias based on subjective decisions, which can distort the sample. Option D is incorrect because convenience sampling is highly prone to bias, as it selects individuals who are easiest to reach, which may not represent the entire population. Option E is incorrect because focusing only on individuals with particular interests introduces a bias related to the characteristics of the participants.
To neutralise the effect of formic acid injected by ant bite, which among the following can be used?
Recently Parliament passes bill to raise Nabard’s capital to Rs _____.
Which of the following was the leading oil producing country in the world for the year 2020, according to the US Energy Information Administration?
Which of the following is/are a biofertilizer used to add, conserve and stimulate phosphorus as a plant nutrient in the soil?
1. Azospirillum
...Where is the Indira Gandhi International Airport located?
Which of the following themes have not been identified for tourism under the Swadesh Darshan Scheme 2.0?
Consider the following statement about Pradhan Mantri Fasal Bima Yojana.
I. Recently Maharashtra government had requested to extend deadline of C...
Article 77 of the Indian Constitution deals with the __________.
Which of the following states has been allocated the maximum number of Rajya Sabhaseats?
Which part of a flower is the sticky surface at the top of the pistil, it traps and holds the pollen?