Question
Which sampling technique is best suited for dividing a
population into distinct subgroups and ensuring each subgroup is proportionally represented?Solution
Stratified sampling is ideal for situations where the population can be divided into distinct subgroups, or "strata," each representing a specific characteristic, such as age or income level. In stratified sampling, the population is split into these strata, and random samples are drawn from each to ensure proportional representation. This approach is especially useful when the subgroup characteristics are expected to influence the analysis, as it reduces sampling error and enhances the precision of the results. Option A is incorrect because simple random sampling does not ensure representation of subgroups. Option B is incorrect as systematic sampling selects every nth individual, which does not account for subgroups. Option C is incorrect because cluster sampling involves dividing the population into clusters, but it does not ensure proportional representation within subgroups. Option E is incorrect as convenience sampling lacks structure and does not aim for representativeness.
Statements:
Only a few erasers are pencils
All erasers are pens
No pencil is a stencil
Conclusions:
I. Some erase...
. Statement:
Few burger are not maggi.
All maggi are Pizza.
Only a few Pizza are dosa.        Â
Conclusio...
In the question below there are three statements followed by two conclusions I and II. You have to take the three given statements to be true even if t...
Statement:
Only a few Men is Women.
All Women is Wife.
Some Women is Husband.
Conclusion:
I. No Wife is Men
...In the following question below are given some statements followed by some conclusions based on those statements. Taking the given statements to be tru...
Statement:
I) Some colour are nice
II) Some nice are floor
III) No floor is blue
IV) All colour are good
Conclusio...
Some mobiles may not be papers. Some dusters are not calculators
Statement:
Some boat is ship.
Only a few ships are rocket.
Only helicopters are rocket.
Only airplane is boat.      ...
Statements:
All Platters are Roasters.
All Roasters are Sticks.
No Stick is a Pan.
Conclusions:
I. All roasters can be Pan.
II. No Pan is a Platter.
Statements: Hands # Leg Arms % Leg Ear & Leg Eyes # Ear
Conclusions:
I. Hands % Arms
II. Eyes ≤ Ear
III. Arms $ Ear
IV. Eyes & Hands