NURSING EXAM QUESTIONS
NUTRITION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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which is NOT TRUE about z score?
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has positive and negative value
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can falls between-2 & +2
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distance of value to the average
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could not include 0
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Explanation:
Detailed explanation-1: -The statement is false. The Z-score will be 0 if X−X=0⇒X=X X − X = 0 ⇒ X = X . Hence, it the Z-score would be 0 for the population mean only when the distribution X is normally distributed or symmetric.
Detailed explanation-2: -Dividing the sum of the Z score multiplications by the standard error is not part of the calculation process of the correlation coefficient as in finding the Z scores this step is already completed. Hence, the option (b) is the correct answer.
Detailed explanation-3: -A z score of zero means that your x value is equal to the mean.
There is 1 question to complete.