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November 01, 2025, 10:30:18 am
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Author Topic: Help finding percentage using standard score  (Read 894 times)  Share 

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almostdonewithschooling

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Help finding percentage using standard score
« on: January 22, 2019, 10:41:30 pm »
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In the picture, it tells us that her standardised score, z=-1, and finished in the bottom 16%

I know how to find the standardised score but I don’t know how they got the 16% bit.

If anyone could help, tysm
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Lear

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Re: Help finding percentage using standard score
« Reply #1 on: January 22, 2019, 10:46:33 pm »
+1
68-95-99.7 rule.
A Z score of -1 means it is one standard deviation away from the Mean on the left side.
This diagram may be of use.
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almostdonewithschooling

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Re: Help finding percentage using standard score
« Reply #2 on: January 22, 2019, 11:07:04 pm »
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I get it now, thanks
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