Answer :
Final answer:
Sampling is a statistical concept of selecting a subset from a population. Measuring the height and weight of students in a class, taking a blood sample, and performing a population census are all examples of different types of sampling strategies.
Explanation:
The term 'sampling' is commonly used in statistics to describe the process of selecting a subset of individuals from a statistical population to estimate characteristics about the whole population. Each of the options provided can be seen as an example of sampling when considered in the right context.
A) When measuring the height and weight of each student in a particular class, you are technically sampling if the class represents a subset of a larger population (for example, all students in the same grade in the school). B) Blood sample is a clear example of sampling as it is a small portion taken from the body to represent the health status of the entire body. C) A population census, even though it aims to cover the entire population, in reality, is an approximation and thus can be seen as a sampling of sorts as well. So answer D) All of these, is the most appropriate.
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