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Explanation: Selection bias occurs when certain segments of the population are over- or under-represented in the sample. Stratified sampling effectively combats this issue by dividing the population into well-defined strata and sampling proportionally from each. This ensures balanced representation, minimizes bias, and provides a clearer reflection of the entire population. This technique is particularly useful in diverse populations, where subgroups may have different characteristics relevant to the analysis. Option A: Convenience sampling often increases selection bias as it does not account for representativeness. Option B: Systematic sampling can reduce bias but may inadvertently introduce patterns if the population is ordered. Option D: Self-selection introduces significant bias as it relies on participant interest, skewing the sample. Option E: Historical data may not be representative of current conditions, leading to bias in conclusions.
An association between organisms of two different species in which one is inhibited or destroyed and the other is unaffected is called
Which of the following is best suited as catch crop?
Damaging stage of white grub is
Apomixis refers to
The breakdown of nitrites and nitrates by bacterial activity is known as:
What is the correct definition of "Fingerling" in fisheries terminology?
ACABC (Agri-Clinic or Agri-business Centre) takes training from which of the following organization?
Which machinery can be used for all purpose like sowing, field preparation, weeding etc etc.
The recently approved variety DMH 11, the 1st GM Food Crop is tolerant to ____
250 million years ago the Earth's seven continents were all grouped together into a super continent called: