METHODS OF DATA ANALYSIS
MEASURES OF DISPERSION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Mhel’s score in a 75 item test was the median score. What is his percentile rank?
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35th
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50th
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25th
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75th
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Explanation:
Detailed explanation-1: -the median, symbolized Mdn, is the middle score. It cuts the distribution in half, so that there are the same number of scores above the median as there are below the median. Because it is the middle score, the median is the 50th percentile.
Detailed explanation-2: -From this formula, it is given that the 5th decile is the median since 5 (n+1) / 10 is the data point that represents the halfway point of the distribution.
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