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OpenStudy (anonymous):
Sketch a normal curve with a mean of 50 and a standard deviation of 2. Label the horizontal axis at one, two, and three standard deviations from the mean.
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OpenStudy (campbell_st):
the mean is the centre of the curve and then add or subtract the standard deviation. So one standard deviation is 50 + 2 = 52 and 50 -2 = 48 |dw:1363720529011:dw|
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