# Charting confidence interval with a fuzzy line?

#### Jordo82

##### New Member
Hi all,

When building charts, I always like to include confidence intervals so the reader has a sense of how solid the results are. However, I don't think error bars do a great job of visually demonstrating the idea of a confidence interval. It shows the upper and lower range, but doesn't leave the reader with the impression that a result closer to the center of that range is much more likely than something at the outer edge.

My idea is to use a line that's colored using a gradient which is dark in the center of the range, and gradually fades out to the edge of the confidence interval. It would basically look just like a fuzzy line.

I've tried building a fuzzy line using multiple area charts, but with no luck. I'm looking for suggestions on how to attempt this, or any other clever ideas for clearly charting a confidence interval. I'm trying to think outside the box (and whisker).

Thanks!

#### tusharm

##### MrExcel MVP
If you are using Excel 2007 or later, you can achieve what you want with error bars. Format the error bar so that is is thick (5pt or more) and use a gradient that is rectangular and dark in the middle and light towards the edge.

Hi all,

When building charts, I always like to include confidence intervals so the reader has a sense of how solid the results are. However, I don't think error bars do a great job of visually demonstrating the idea of a confidence interval. It shows the upper and lower range, but doesn't leave the reader with the impression that a result closer to the center of that range is much more likely than something at the outer edge.

My idea is to use a line that's colored using a gradient which is dark in the center of the range, and gradually fades out to the edge of the confidence interval. It would basically look just like a fuzzy line.

I've tried building a fuzzy line using multiple area charts, but with no luck. I'm looking for suggestions on how to attempt this, or any other clever ideas for clearly charting a confidence interval. I'm trying to think outside the box (and whisker).

Thanks!

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