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 three or 2 standard deviation  



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Author3 Posts
  #1

here is a kaplan question

a student takes 2 tests

test a score mean sd
45 30 5

test b 60 40 10


on which test did the student do better?
pls explain me how to do this

thanks





  #2

for first test, the student get 45 when mean is 30 & SD is 5 . which mean he get +3 SD (45-30 = 15 and one SD is 5 )
for the second test, he got +2SD (60-40 =20 & one SD for 2nd test is 10 )
So he do better in first exam .


  #3

Thanks for sharing these questions here. It will help students like me to prepare for their kaplan exam.





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