Question

A survey is conducted in City X to study the awareness about climate change among the people there.
From the given options, identify the best sample that represents the population.

• A. 150 random people of City X.
• B. All the adults of City X.
• C. 120 random students of City X.
• D. 120 random people of City X.

Answer 1

The correct option is A 150 random people of City X.

Option A
The sample is biased, as the adults have been given the preference.
Option B
The sample is biased, as the students have been given the preference.
Option C
The sample here is unbiased and so is representative of the population
Option D
The sample here is also unbiased and so is representative of the population
When there are multiple representative samples, the sample that is of a larger size provides a better conclusion.
$150>120$
So, option C is the correct answer