Which of the following statements are correct ?
(A) Population is a collection of all elements having the same characteristics.
(B) The measurable characteristic of a population is called parameter.
(C) The sample focuses on the identification of the characteristic.
(D) The sample makes an inference about the population.
Choose the correct answer from the options given below:
Answer & explanation
Correct answer: option 4
The correct answer is Option (4) → (A), (B), and (D) only
A population is the whole group under study, a parameter is a measure of the population, and a sample is a part of the population used to learn about it.
So the characteristics are identified for the population, and the sample is used to draw inferences about the population.
Checking the statements
(A) Population is a collection of all elements having the same characteristics. — Correct. This is the definition of a population.
(B) The measurable characteristic of a population is called parameter. — Correct. A measure of the whole population is a parameter.
(C) The sample focuses on the identification of the characteristic. — Incorrect. It is the population whose characteristics are identified.
(D) The sample makes an inference about the population. — Correct. A sample is used to draw an inference about the population.