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is the function normpdf on graphing calculators ever used?

Guest Apr 24, 2015

Best Answer 

 #6
avatar+91051 
+5

That got me thinking.  I have never thought about the formula for the Gaussian curve before.

This is an extract from     http://en.wikipedia.org/wiki/Normal_distribution

 

Melody  Apr 26, 2015
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6+0 Answers

 #1
avatar+91051 
+5

Yes it is but I am not sure how.  What exact question would it be used for?

I'd like to know too :/

Melody  Apr 25, 2015
 #2
avatar+26329 
+5

normpdf calculates the probability density function values for a normal distribution of given mean and standard deviation.

 

For example, if we have a normal distribution with mean 10 and standard deviation 3 and we want to know the value of the probability density at 12, then normpdf(12,10,3) = 0.106483   (at least, that's how it's done on the TI-Nspire calculator).

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Alan  Apr 25, 2015
 #3
avatar+91051 
+5

Yes but what does that actually mean Alan ?

Melody  Apr 25, 2015
 #4
avatar+26329 
+5

Perhaps this graph will help:

normal distribution

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Alan  Apr 25, 2015
 #5
avatar+91051 
0

Thanks Alan, now I understand :)

Melody  Apr 26, 2015
 #6
avatar+91051 
+5
Best Answer

That got me thinking.  I have never thought about the formula for the Gaussian curve before.

This is an extract from     http://en.wikipedia.org/wiki/Normal_distribution

 

Melody  Apr 26, 2015

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