If you have a normal distribution population of human heights and a subset of that population is heights of basketball players. How would you show that the heights of basketball players is not a normal distribution in that population it is a subset. I need HELP!

Question

tkhunny · Answer

Find the 25-percentiles.  (That's 0, 25,50, 75, 100 or Min, 25, Median, 75, Max)

anonymous · Answer

Ok, I know you were trying to help me with this before, so maybe I'm mot explaining it right. So if you have a population of human heights that is a normal distribution. Basketball players say are part of the population but a subset that obviously would not fall into the normal distribution population because they are giants, I just don't exactly know how to put this in a statistical form

tkhunny · Answer

Giants may still be Normal.  Get those five numbers from each population.

anonymous · Answer

I don't think it has to do with a percentage as much as how in human heights did it become a subset that is not normally distributed.

anonymous · Answer

Not if we are dealing with the normally distributed human height. I need help so I am not trying to say your wrong but for the example I am trying to make basketball players would be a subset that is not normally distributed

anonymous · Answer

Or it could be that basketball players are the normal distribution population and woman such as myself that are 5 foot 3 would be a subset because most basketball players are well over 6 feet to close to 7 feet. Maybe that would be a better example?

jim_thompson5910 · Answer

this page http://www.johndcook.com/blog/2008/07/20/why-heights-are-not-normally-distributed/ says `The normal distribution describes heights remarkably well near the mean, even a couple standard deviations on either side of the mean. But in the extremes, such as six standard deviations out, the model doesn’t fit well` so perhaps the basketball players are too tall that they are too extreme to the right of the mean? telling us that if we focus on the extremes only, then this sub-population isn't going to be normally distributed.

anonymous · Answer

Thanks Jim, I appreciate your help, Lisa Slomo

jim_thompson5910 · Answer

no problem