morinia
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caculating a variance in Excel
Experts,
I have to columns of data. One has the number of claims for a member. The other has the number of months the member is enrolled.
i am trying to calculate the variance to see if there is a correlation between the two. Does anyone have any idea how I would dot this in Excel.
Using ColumnA as number of claims
ColumnB as number of months enrolled
I have to columns of data. One has the number of claims for a member. The other has the number of months the member is enrolled.
i am trying to calculate the variance to see if there is a correlation between the two. Does anyone have any idea how I would dot this in Excel.
Using ColumnA as number of claims
ColumnB as number of months enrolled
ASKER CERTIFIED SOLUTION
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ASKER
The_Barman,
If I receive a value of .348, does that mean there is little correlation?
If I receive a value of .348, does that mean there is little correlation?
correct.
Correlation Coeficient runs between 1 and -1 with 1 being perfect positive corelation and 0 being no correlation.
Correlation above .8 or below -.8 are good. Between .5 and -.5 is poor correlation.
As .348^2 (.348 squared) = 0.1211 = 12%
Only 12% of the change in the Y value can be attributed to variation in the X value.
Correlation Coeficient runs between 1 and -1 with 1 being perfect positive corelation and 0 being no correlation.
Correlation above .8 or below -.8 are good. Between .5 and -.5 is poor correlation.
As .348^2 (.348 squared) = 0.1211 = 12%
Only 12% of the change in the Y value can be attributed to variation in the X value.
=POWER(STDEVP(A:A),2)