topic Re: Clustered bar chart - standard error bars disappear in Discussions

Clustered bar chart - standard error bars disappear

FoodSci321 — Sun, 11 Jun 2023 11:27:56 GMT

I'm not sure what's going on with my dataset, but I can see standard error bars on my graph when I just have the averages plotted against the flour type. The standard error bars disappear when I then add the timepoint ordinal variable in. Do I need to separate the 3 timepoints into separate columns in the dataset, or is there something else that's going wrong? Thanks!

Re: Clustered bar chart - standard error bars disappear

jthi — Thu, 22 Sep 2022 19:45:49 GMT

I think you only have one data point for each group Flour + Timepoint, so there is no error to be calculated.

For example in this graph 17/F has no error bar because LINDA is the only row in that group:

Re: Clustered bar chart - standard error bars disappear

FoodSci321 — Fri, 23 Sep 2022 18:41:14 GMT

This makes sense, however, I have 2-3 data points for almost every code in Flour+Timepoint (the R1/R2/R3 columns). I'm having a hard time getting JMP to calculate the average and put it into a single bar. Could this be my issue with lumping them altogether into one variable (the average of the 3 columns)?

Re: Clustered bar chart - standard error bars disappear

jthi — Fri, 23 Sep 2022 19:14:16 GMT

Ah... didn't notice you had three "different" y-axis. I'm not exactly sure how JMP will calculate them in that case when you combine them like that. You could first try stacking the data by those R1-R3 columns and try to plot again.

Re: Clustered bar chart - standard error bars disappear

FoodSci321 — Fri, 23 Sep 2022 19:47:21 GMT

Thank you so much! It worked perfectly to put in the standard errors as applicable to my data.