gamfit
Fit a gamma distribution to a data sample.
Syntax
[ahat,bhat,aci,bci]=gamfit(x)
Inputs
- x
- Data sample.
Outputs
- ahat
- An estimate of the shape parameter a.
- bhat
- An estimate of the scale parameter b.
- aci
- A confidence interval for a. A two-element vector containing the lower and upper bounds of the interval.
- bci
- A confidence interval for b. A two-element vector containing the lower and upper bounds of the interval.
Example
x = [9 12.88 6.56 12.4 1.72 14.38 9.55 8.48 3.76 11.6 6.7 29.14 9.76 13.2 19.95 11.77
8.47 7.23 7.36 7.24]
[ahat,bhat,aci,bci] = gamfit(x)
ahat = 3.5765
bhat = 2.9519
aci = [Matrix] 2 x 1
1.9763
6.4724
bci = [Matrix] 2 x 1
1.5615
5.5805
Comments
The function uses maximum likelihood estimation with 95% confidence intervals.