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Identify each of the following as examples of nominal, ordinal, interval, or ratio scales of measurement. (4 points each)
A poll of registered voters in Florida asking which candidate they support
The length of time required for a wound to heal when using a new medicine
The number of telephone calls arriving at a switchboard per five-minute period
The distance first-year college football players can kick a ball
Mental health diagnoses present in an elderly population
The rankings of employees on their job performance
A psychologist measures units of change for a memory test after students are given an opportunity to sleep only four hours. The following change units were obtained: 7, -12, 4, -7, 3, -10. Find the a) mean, b) median, c) mode, d) standard deviation, e) range, and f) variance.
Suppose you want to figure out what to do with your degree in psychology. You ask some fellow students from your psychology program who recently graduated to find out what they are doing with their degree and how much it pays. What type of sampling is this? What are the limitations of this sampling approach? (Points : 8)
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