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Statistics 101 Final Exam With Complete Solutions
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Statistics 101 Final Exam With Complete Solutions
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Statistics 101 Final Exam With CompleteSolutions
descriptive statistics Answer: the collection, organization, summarization, and presentation of data
inferential statistics Answer: making inferences (conclusions and predictions) based on the data and
any tests run on the data; generalizing from samples to population
qualitative variable Answer: can be placed into distinct categories, according to some characteristic
or attribute
quantitative variable Answer: are numerical and can be ordered or ranked
discrete variable Answer: can be assigned values such as 0, 1, 2, 3 and are said to be countable
continuous variable Answer: can assume an infinite number of values between any two specific
values; obtained by measuring; often include fractions and decimals.
random sampling Answer: number each subject of the population; randomly select numbers to
create a sample
systematic sampling Answer: number each subject in the population; randomly select the first
subject; select every k-th subject after that
stratified sampling Answer: divide the population into groups; randomly select subjects from each
group
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