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Answer 1: Normal Explanation: The histogram is symmetric about its mean score. Hence, the distribution of the score follows a normal distribution. Answer 2: Distance traveled absolute zero. Explanation: The ratio measurement scale is used when the measurement is done for a continuous quantitative variable, and the zero has a meaning in itself. Since distance traveled is a quantitative variable and measurement is done on a continuous scale with zero, it has a meaning in itself. The variable has a ratio scale. Answer 3: SAT Score Explanation: Ethnicity is nominal, high school rank is ordinal, distance traveled is a ratio, and SAT score is an interval scale. An Interval scale is used for the quantitative variable with zero does not have a meaning in itself or when the numbers are used as a reference point without meaning in itself. Answer 4: 64 Explanation: Range = max score -min score =87-23 =64 Answer 5: The score point above and below which an equal number of cases fall. Explanation: The mean is the score falling halfway between the lowest and the highest scores in the distribution, and the median divides the distribution of scores into half. Answer 6: Mode Explanation: Mode is the highest frequency occurring in a series of the score. As four occurs twice while 5 and 7 have a frequency of 1, therefore, mode=4. Answer 7: 4 – When categories are ordered. 5 – The process of assigning numbers to the characteristics you want to study 2 – Variable depends on the c ...
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