Hi

Homer scored 76 on his math test.

The class average was 61, the median was 66, and the variance was 25. 

*Note:  average(sum of scores/number of scores) and mean the same.

   z = (76-61 / 25 = 15/25 = 3/5 = .6

  P(z < .6) = .72575  

1) Homers Percentile rank is 72.575%

2) What percent of the people taking this test scored better than homer? 27.425% 

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