<PRE><B>Question 177716</B>
a)1078/15=71.87
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b)83 64 84 76 84 54 75 59 70 61 63 80 84 73 68
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54,59,61,63,64,68,70,73,75,76,80,83,84,84,84
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median is 73 which is the middle term
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c)standard deviation is 9.74
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SD  {{{sqrt(sum((X-M)^2)/(n-1)  )}}} where X is each term, M is the mean and n is the number of terms</PRE>