Question About Probability, Travel Distance, and What Function to Use?

MocExcel

New Member
Joined
Jun 22, 2017
Messages
3
Hello!

I'm trying to figure out what is the probability of a unit traveling greater than X given my data set. I am testing what is the % chance of the distance being greater on 1 try.

Here is some info about the data set:
Mean Travel Distance: 33.8
Median Travel Distance: 25
Standard Deviation: 31.3
Sample Size: 2139
Max Distance: 192
Min Distance: 0

I was using the below equation, but I do not know if it is the right function because the data is skewed right instead of a normal distribution:

=1-NORM.DIST(Travel Distance Being Tested,Mean,Standard Deviation,TRUE)

Should I be using a different function based on my data set?
 

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shg

MrExcel MVP
Joined
May 7, 2008
Messages
21,782
Office Version
  1. 2010
Platform
  1. Windows
Reckon someone would have to look at the data to see if they could fit a better distribution, but you could certainly use a formula to count the fraction of samples > x:

=countif(data, ">" & x) / count(data)
 

MocExcel

New Member
Joined
Jun 22, 2017
Messages
3
Not sure if this helps to better describe the data, but the =SKEW function is 1.63
 

shg

MrExcel MVP
Joined
May 7, 2008
Messages
21,782
Office Version
  1. 2010
Platform
  1. Windows
Not really.
 

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