determine whethe the following statement is true of false Ex

determine whethe the following statement is true of false ,Explain

When obtaning a srratified sample,the number of individuals included within each sratum must be equal.

choose the correct answer below

a. false, the individuals in each sratum must be homogenous

b, true, becausein each sratum with more or less individuals, it will be weighted more or less than the other state. this will introduce bias

c. false, because as long as each sratum has a threshold number of individuals representative of the variation inthe population, results are are meaninful. The number of individuals does not need to be exactly equal

d.true, because if some straa have significantly less individualsthan others, there can be meaningful results from them

Solution

Option C:

c. false, because as long as each sratum has a threshold number of individuals representative of the variation inthe population, results are are meaningful. The number of individuals does not need to be exactly equal.

For example, if there are two cities, one big and one small, it will not represent the whole population fairly if we will have equal samples on each city.

If so, in your experiment it will look like the cities are the \"same in size\", which is not true.