Mathematics > EXAM REVIEW > Introduction to Statistics Test 1 Review (All)
Introduction to Statistics Test 1 Review
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Test Review 1 1.1.1 Sampling and Parameters To study the mean head size of all people in her state, Jacqueline collects data from 20 people in her town. Which type of sampling is used? Conven... ience Sampling o Involves selecting individuals from the population that are easily accessible, or from which data is easily obtained. Douglas wants to estimate the percentage of homeowners that own at least one dog. He surveys 125 randomly selected homeowners to determine whether or not they own dogs. What is the statistic? The percentage of surveyed homeowners that own at least one dog. o Statistic is a numerical characteristic of the sample. In this case, the statistic is the percentage of surveyed homeowners that own at least one dog. A parameter is a number that is used to represent a population characteristic and that generally cannot be determined easily. True. In order to study the wrist sizes of people in her town, Kathryn samples the population by dividing the residents by age and randomly selecting a proportionate number of residents from each age group. Which type of sampling is used? Stratified Sampling o Involves dividing the [Show More]
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