BUSINESS ADMINISTRATION
BUSINESS ANALYTICS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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1.33
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58.2
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-2
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-1.33
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Detailed explanation-1: -A z-score of z = +2.00 is always located exactly 2 standard deviations above the mean.
Detailed explanation-2: -What is the z-score of a value of 27, given a set mean of 24, and a standard deviation of 2? To find the z-score we need to divide the difference between the value, 27, and the mean, 24, by the standard deviation of the set, 2. This indicates that 27 is 1.5 standard deviations above the mean.
Detailed explanation-3: -If a z-score is equal to 0, it is on the mean. A positive z-score indicates the raw score is higher than the mean average. For example, if a z-score is equal to +1, it is 1 standard deviation above the mean. A negative z-score reveals the raw score is below the mean average.
Detailed explanation-4: -Z-scores are also known as standardized scores; they are scores (or data values) that have been given a common standard. This standard is a mean of zero and a standard deviation of 1. Contrary to what many people believe, z-scores are not necessarily normally distributed.