error bars

  1. H

    Error bars using R

    Hi. I am relatively new to this software and I was hoping someone can help. I am trying to produce an error bar using R. My data is as follows: [mean] [[standard deviation]] pH-max (day 1) [7.33] [[0.12]] pH-max...
  2. H

    error bars on R

    hi eveyone, i'm trying to make some errors bars on my barplots. So I use a way that I know but it is not working for a wilcoxon test, only for a t.test and I don't understand why? here is my script: > df1 <- data.frame(KO, WT) > df1 duree5N duree5N.1 6 0.041198999 0.005963933...
  3. E

    Error bars don't overlap but aren't significantly diff. - interpretations/reasons?

    Hello all, I'm struggling to understand/interpret my graph and kruskal wallis test. Basically, I've created a bar graph which looks pretty good. There are 5 bars, each with error bars, and none of the error bars overlap. All of my 5 groups look significantly different. HOWEVER, when I do a...
  4. A

    Error bars for exponentially distributed data

    Folks, Short version: What is the best and most proper way for displaying error bars on exponentially distributed data? Long version: I have some data (biological, though that's not important) that we bin to produce a histogram. Within any given bin the data are exponentially distributed -...
  5. W

    Error for combining multiple binomial distributions

    Lets say we have two processes and we want to know which has a higher success rate. So we do two sets of trials. process 1 gives 53 out of 606 and process 2 gives 32 out of 595. So p1 is 0.0538 with a 95% CL of [0.0371,0.0751] p2 is 0.0875 with a 95% CL of [0.0662,0.1128] It would seem that p2...
  6. L

    Exponential qPCR values and calculation of Error

    Hi I'm hoping that one of you may be able to help. I'm currently trying to present some qPCR data (for those not familiar with this it measures the number of PCR cycles it takes for your target to be detected known as the ct value). PCR reactions are exponential so I've the been able to...
  7. S

    Make barplot with error bars, anova out of a table

    Helo everybody, I'm new to R and have some issues with my data in R. My raw data look like that: ID Day size 1 1 7 1 1 7.2 1 1 7.1 2 1 7.3 2 1 7.4 2 1 7.2 3 1 7 3 1 7.1 3 1 7.5 4 1 7.3 4 1 7.2 4 1 7.6 1 2 7 1 2 7.2 1 2 7.1 2 2 7.1 2 2 7.4 2 2 7.2 3 2 7.5 3 2 7.1 3 2 7.5 4 2 7.2 4 2 7.2 4...
  8. J

    Error bars and split-plot design

    I have the following experimental design : Sampling is carried out on three random sites (Factor Site is coded : Site1, Site2, Site3). Within each site, sampling is carried out in a dry plot and in a wet plot (Factor Hydrology is coded : Dry/Wet) Within each of the previous plot, sampling is...
  9. G

    [Sigmaplot] - error bars

    I am using SigmaPlot to show a multiple line and scatter plot for 4 different experimental conditions. I want to display inter-quartile ranges as error bars, however when doing this the error bars for each line overlap therefore making it difficult to read. Does anyone know how to stagger or...