Normal Distribution Problem ( DAT, GRE )

John does a tricky (but simple) quantitative comparison problem involving the normal distribution. This problem is ideal practice for the GRE and DAT and applies in spirit to the GMAT although the GMAT does not have quantitative comparison problems. This is part of our online course for the DAT. A similar treatment can be found in our online GRE Math course. www.sWartwoodONLINE.com (online) and www.sWartwoodprep.com (in-person).
#gre #gremath #swartwoodprep

[@nancytillman5132]

a tricky problem explained very well

[@annmurasaki6549]

Thank You :)

[@juliannerosa8734]

This is excellent!

[@SWARTWOODPREP]

Thank you!

[@avam.nezhad7319]

I really enjoyed the way you explained

[@SWARTWOODPREP]

Hi Ava, Thank you! Let us know what else you would like to see!

[@avam.nezhad7319]

@@SWARTWOODPREP Thank you for your consideration, as I was looking through the lessons, you've covered lots of topics that are so impressive, but I couldn't find the Quartiles and Percentile lessons.

[@saakshisule376]

I tried learning from soooo many videos, and they directly started from difficult questions. I got so frustrated coz i understood nothing. But, now after this video, i am able to solve all those questions. SUCH GOOD TEACHING.

[@aayushbhavsar661]

Brilliant explaination

[@iriswhite3184]

This is amazing. Such a good explainer

[@sanskritichauhan3728]

THANK YOU SOO MUCH.

[@a33m3a]

I don’t understand why you drew the 70th percent closer to the 60th percentile but the 700 right in the middle between 600 and 800

[@SWARTWOODPREP]

Hi Amnah, I asked John (he's teaching MCAT right now). He said that 700 is numerically right in the middle of 600 and 800, but the 70th percentile must be closer to the 60th percentile than the 80th percentile (left to right) since the normal curve slopes "down." If the 70th percentile were exactly in the middle (left to right), then the area between the 60th and 70th would be greater than the area between the 70th and 80th. But, the areas must be equal (.10). He said that if this is unclear, he will try and run a video response later. Hope that helps! Stephanie Coordinator