Exam Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 1) Identify the type of observational study: cross-sectional, retrospective, or prospective. Scientists studying the migration habits of Aleutian geese collect data from reports measuring the number of geese during "fly-offs" over the past 15 years. A) Cross-sectional B) Prospective C) Retrospective
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2) To monitor the population of Herring in Manchester, New Hampshire, fisheries biologists catch samples of the fish in a river at various locations determined by a computer randomization program. Does this sampling plan result in a random sample? Simple random sample? A) No; no B) Yes; no C) Yes; yes D) No; yes
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3) To assess the variation in measurement (in cubic centimeters) of pre-filled syringes containing experimental cervical cancer vaccine, manufacturers select every 200th syringe beginning at a random moment. Does this sampling plan result in a random sample? Simple random sample? A) Yes; no B) Yes; yes C) No; yes D) No; no
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4) Determine whether the given value is a statistic or a parameter. Nurses measure and calculate the average (mean) body temperature for all 187 patients at a regional hospital. A) Statistic B) Parameter
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5) Determine which of the four levels of measurement is most appropriate. Ornithologists classify hummingbirds in the United States using 17 different species: Allen, Anna, Berylline, Black-chinned, Blue-throated, Broad-billed, Broad- tailed, Buff-bellied, Calliope, Costa, Lucifer, Magnificent, Ruby-throated, Rufous, Violet-crowned, White-eared, and Xantus. A) Nominal B) Ordinal C) Interval D) Ratio
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6) Determine whether the given value is a statistic or a parameter. In studying the loggerhead turtle on Anna Maria Island, FL, scientists observe the average (mean) number of hatchlings in all 253 nests. A) Parameter B) Statistic
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7) Determine whether the given values are from a discrete or a continuous data set. The Produce for Better Health Foundation manages the campaign advocating consumers to eat "5 Fruits and Vegetables A Day for Better Health" and gathers data on the number of servings of fruit and vegetables that a sample of Americans ate yesterday A) Discrete B) Continuous
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8) To assess the variation in volume (in cubic centimeters) of different manufacturers' pre-filled hormone injections, reproductive biologists select every 50th syringe beginning at a random moment. Does this sampling plan result in a random sample? Simple random sample? A) No; yes B) Yes; no C) Yes; yes D) No; no
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