Define demographic measurement. Write its importance.​

they allow researchers to know how closely the sample resembles the target population. ... As such, researchers know the percentages of the population based on race, gender, age, education, and a whole host of other demographic characteristics.

Demographic measures typically are used to identify key respondent characteristics that might influence opinion and/or are correlated with behaviors and experiences. ... Demographic measures are also very important because they allow researchers to know how closely the sample resembles the target population

Explanation:

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c is the answer to this question. don't bunt to ruin a pitchers no hit game. it's .

the trait of personality falls in the middle of the diagram because personality is a mixture of ones nature and environment.