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1) The main purpose of descriptive statistics is to
A. Summarize data in a useful and informative manner.B. Estimate a population characteristic based on a sample.C. Determine if the data adequately represents the population.D. Gather or collect data.
Why is a sample used more often than a population? Choose the correct answer below.
a.) Inferences cannot be made when using the population.
b.) It is usually impossible to count the entire population.
c.) Sample statistics are more accurate than the population parameter.
d.) All samples are representative of a population, so the population does not need to be used.