Q-Q plot equivalent for discrete variable?


by bradyj7
Tags: discrete, equivalent, plot, variable
bradyj7
bradyj7 is offline
#1
Dec3-12, 01:40 PM
P: 122
Hello,

You can use a Q-Q plot to visually test if 2 continuous variables are from the same distribution and you get a straight line.

Is there a way to visually test if 2 discrete variables are from the same distribution? Also is there a way to test it mathematically?

Thanks
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MarneMath
MarneMath is offline
#2
Dec4-12, 02:12 AM
P: 422
You can do a Q-Q plot for discrete data, but it's a bit more tricky, i'll try to find a source for you.
bradyj7
bradyj7 is offline
#3
Dec4-12, 04:06 AM
P: 122
Thanks

bradyj7
bradyj7 is offline
#4
Dec4-12, 11:31 AM
P: 122

Q-Q plot equivalent for discrete variable?


Hi there,

Apart from using a Q-Q plot is there any other way to test if two variables have the same distribution?

Thanks
DrDu
DrDu is offline
#5
Dec4-12, 01:38 PM
Sci Advisor
P: 3,364
A chisquare test?


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