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Stratified sampling is used when the population is divided into distinct subgroups, or strata, that differ from each other in key characteristics (e.g., age, income, education level). This technique ensures that each subgroup is adequately represented in the sample by selecting samples proportionally from each stratum. For instance, if a researcher wants to study customer satisfaction among various age groups, stratified sampling would ensure that each age group is represented in proportion to its size in the population. This increases the accuracy of the results and helps make more reliable comparisons between subgroups. Why Other Options Are Incorrect: • A: Simple random sampling does not consider subgroups and may not be effective in capturing important differences in a population. • C: Cluster sampling involves dividing the population into groups and then randomly selecting whole groups, which may not capture the diversity within subgroups. • D: Systematic sampling selects every nth individual, which may not provide the representative diversity needed in heterogeneous populations. • E: Convenience sampling is based on easy access to data and does not guarantee that all subgroups will be adequately represented.
Wolf apple is the common name of
The action to remove food from the market at any stage of the food chain, including that possessed by consumers is called:
Which of the following is a fiber and oilseed crop?
For the farm area of 40 ha. followed under a single cropping pattern, the suitable size of tractor is __ ?
Genes located on sex chromosomes and the associate linkage of such genes is termed as sex linkage . An example of sex linkage is
The element is found highest in earth crust is:
Which of the following crop is highly tolerant to alkalinity?
Which of the following is biennial weed?
Yield advantage is higher than the pure crops in this type of intercropping system:
Major pest of rice during milking stage is: