The infant mortality rate in Kerala is lower than in Madhya Pradesh primarily due to: MCQ with Answer and Explanation

Explanation:
Population variance = 90/10 = 9. Sample variance = 90/9 = 10, but usually variance of the data (population) is 9 if it's the whole set. I'll assume population.

Explanation:
An elementary or simple event contains exactly one sample point.

Explanation:
Primary data is distinguished by its originality and direct relevance, as it is collected firsthand by the investigator for the current study.