1. In a ecological study, a biologist gave predators access to three different p

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1. In a ecological study, a biologist gave predators access to three different prey items and noted which prey item was eaten first, second, and last. What type of data does this represent? a. Ordinal Data because values are used as ranks and NOT used as numerical measurements Nominal Data because values are used as qualitative measurements and NOT used as numerical measurements b. An epidemiologist collected data from a group of patients on the number of migraine headaches per month. What type of data does this represent? 2. The observations on each individual (number of headaches per month) are nominal numeric data a. b. The observations on each individual (number of headaches per month) are discrete numeric data A herpetologist took measurements of body temperatures from lizards who were warming themselves in the sun. What type of data does this represent? 3. Body temperature would be classified as discrete data because temperature can vary along a discrete scale. Body temperature would be classified as continuous numeric data because a. b. temperature can vary along a continuous scale. A marine biologist noted the body color of randomly sampled sea stars. What type of data does this represent? 4. a. The observations are sea star body colors (c.g.purple, orange, red) which form categories. These are categorical data. The observations are sea star body colors (e.g. purple, orange, red) which form b. categories. These are ordinal data. 5. Give four examples of measures of central tendency. a. a)arithmetic mean, b)harmonic mean, c)geometric data, and d) range b. ajarithmetic mean, b)harmonic mean, c)geometric mean, and d) median 6. Three types of means were computed, an arithmetic mean, a geometric mean and a harmónic mean. What can you say about the relative size of each of these descriptive statistics? a. The arithmetic mean is always less than or equal to the geometric mean which is always less than or equal to the harmonic mean. The equality only holds if all the data values are identical. The arithmetic mean is always greater than or equal to the geometric mean which is always greater than or equal to the harmonic mean. The equality only holds if all the data values are identical. b. 7. What advantage does the median have over the arithmetic mean? a. b. The median is not sensitive to outliers The mean is not sensitive to outliers 8. Which of the following four examples are ONLY measures of dispersion. Variance, coefficient of variation, range, median Variance, coefficient of variation, range, mean deviation a. b.

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(I am providing the correct option numbers corresponding to the questions here.)

Question No. Option No. 1 b 2 b 3 b 4 a 5 b 6 b 7 a 8 b 9 b 10 a 11 a 12 b 13 b 14 a 15 a 16 a 17 a 18 a 19 a 20 a 21 b 22 b 23 a 24 a

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