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Mathematics 8 Online
OpenStudy (anonymous):

The heights of 500 students at a local school were recorded and found to be approximated by the normal curve below. Which answer could represent the mean and standard deviation for these data?

OpenStudy (anonymous):

I got 69 for my mean and 6 for my standard deviation but it showed me that 6 wasn't right for my standard deviation. It's 3. But idk how?? I worked it out

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