topic Making custom standard deviation error bars in Discussions

Making custom standard deviation error bars

dawsonrose — Mon, 29 Jan 2024 14:38:57 GMT

Hello!

I am very new to JMP, so excuse my lack of knowledge :) I am trying to make a line graph that has standard deviation error bars based on the values I provide. This is how my table looks:

I discovered to do somewhat of what I need like this:

However, how do I do it for the next samples? For example, how can I also add FW-190 with interval being its own StdDevFW190? Or is that not possible?

Thank you!

Re: Making custom standard deviation error bars

jthi — Mon, 29 Jan 2024 14:48:46 GMT

I'm not sure where you want to add next samples, but one option is to add more columns to interval and disable/enable variables accordingly for the graph.

Data:

but you might want to stack your data (notice multiple series stack)

then you can have one column for values and one for standard deviations + grouping column(s)

Re: Making custom standard deviation error bars

Thierry_S — Mon, 29 Jan 2024 14:52:14 GMT

Hi,

It looks like you have figured out 80% of the problem.

Have you considered stacking your columns to have a single column for Avg and one for Stdev? Table > Stack > select all Avg and Stdev columns > Multiple series = 2

You can then specify the Overlay of the plot as the Label column created upon stacking.

Let us know if it meets your needs.

Best,

Re: Making custom standard deviation error bars

dawsonrose — Tue, 30 Jan 2024 09:24:14 GMT

Hello guys!

Thank you SO much for your answers! I did not even know stacking is a thing :) So this is how my table looks like now, and the data seem to be aligned with the standard deviation

Then I moved onto the graphic builder:

Where I dragged the "standard dev" stack to interval, and it seems mostly right. However, I am not sure of the few things, especially if it really gets the std dev values I have provided?

1. They seem to be in range (even though looking small), however they are all the same values across the way, even though std.dev. changes on the same sample along days.

2. Also, the blue one (FW160), the bars are sideways :D

3. Lastly, I could not start it from zero at all...

How do I fix those? :D Thank you so much!

Re: Making custom standard deviation error bars

scott_allen — Tue, 30 Jan 2024 17:57:43 GMT

@dawsonrose

Looks like you have the Standard Dev label column in the Interval. Placing the Data 2 column as your Interval should get you the correct graph.

Re: Making custom standard deviation error bars

dawsonrose — Wed, 31 Jan 2024 09:06:53 GMT

Thank you so much Scott, and everyone else! I have everything covered it seems, for now :))