Estimating confidence intervals, part 3

Another episode in our continuing series of effort estimation in the small with 90% confidence intervals. I recently finished implementing another feature after doing the effort estimates for each day. Here’s the plot:

 

Effort estimation, 90% confidence intervals

Once again, I underestimated the effort even at the 90% level, although not as badly as last time. Here’s a plot of the error.

Error plot

I also find it takes real mental energy to do these daily effort estimates.

 

 

 

2 thoughts on “Estimating confidence intervals, part 3

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