SOLUTION: Crystal has a percentile rank of 20 in hre graduating class, which consists of 400 students. What is her rank in class?
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Question 953505: Crystal has a percentile rank of 20 in hre graduating class, which consists of 400 students. What is her rank in class?
Answer by jim_thompson5910(35256) (Show Source): You can put this solution on YOUR website!
20th percentile means her score is higher than 20% of the population
20% of 400 = 0.20*400 = 80
she scored better than 80 people, which means 400-80-1 = 319 people scored better than her.
Her rank is 320
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