mash
Forum Fanatic
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what % of cases fall 2 SD below the mean?
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I hear and I forget. I see and I remember. I do and I understand.
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| mjl1717
Forum Hero
Topics: 956
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**2 and a half
2SD is approx. 95% on the bell shaped curve
5% is left over- I divided that by 2.(because you said what is BELOW 2SD
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| mash
Forum Fanatic
Topics: 147
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shudn't it be 47.75%( 1/2 of 95 %)
coz my ques is 2sd below the mean and not below 2sd
actually im a bit confused
can u explain?
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I hear and I forget. I see and I remember. I do and I understand.
--Confucius
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| docofthebigapple
Forum Senior
Topics: 23
Posts: 182
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If it is so, english grammer has taken over the medical part of the question.
2SD below the mean or below 2 SD ???????
Grammer shouldn't be given the highlight. The question should be clear understandable unambigous and the answer should pop-up in the mind before going through the choices.
In this instance, for example. The question for the answer 47.75%should be.
What is the %age of cases falling within 2SD above or below the mean?
THe question for answer 2.5% should be.
What is the %age of cases above or below the 2SD.
For answer 95%
What is the number of cases within +_ 2SD ( i fail to find a way to express the proper character here for the plus-minus.)
I hope the real exam doesn't do this.
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