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# quiz - during the study I What is the population II What is...

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Time Remaining:      1.  (A) Classify the following as an example of nominal, ordinal, interval, or ratio level of measurement, and state why it represents this level: political affiliation of members of a local church (B) Determine if this data is qualitative or quantitative: 16.5 kilowatts of power (C) In your own line of work, give one example of a discrete and one example of a continuous random variable, and describe why each is continuous or discrete .  (Points : 9)          2.  Two popular over-the-counter antacids are compared to determine which brand is preferred. Three hundred subjects are randomly selected then divided into two groups of 150 each, and given one of the two antacids. The researchers in the study were unaware of which antacid was administered at any time

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Unformatted text preview: during the study. I. What is the population? II. What is the sample? III. Is the study observational or experimental? Justify your answer. IV. What are the variables? V. For each of those variables, what level of measurement (nominal, ordinal, interval, or ratio) was used to obtain data from these variables? (Points : 12) 3. Construct both an ungrouped and a grouped frequency distribution for the data given below: 139 130 128 134 140 139 136 130 136 128 138 137 134 128 127 136 140 132 141 138 (Points : 10) 4. Given the following frequency distribution, find the mean, variance, and standard deviation. Please show all of your work. Class Frequen cy 56-58 22 59-61 14 62-64 24 65-67 19 68-70 19...
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