Hey guys im trying to use the standard deviations that i have calcualted inorder to put some error bars on a graph that i have made, but its not wokring... please helP! thanks in advance!

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H+1 H+2 H+3 H+4

Uninfested 2.53 0.68 3.24 5.21 vH9(com.) 3.41 4.91 2.60 9.01 BioL (incom.) 3.61 6.11 3.67 5.30

0.131 0.081 0.323 0.248

0.233 1.169 0.562 0.490

0.360 0.000 0.165 0.413

depending on the distribution of individual values for each point. Excel can

calculate these separate standard deviations, but there appears to be no way

to display them in a graph. Has anyone found a way around this?

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depending on the distribution of individual values for each point. Excel can

calculate these separate standard deviations, but there appears to be no way

to display them in a graph. Has anyone found a way around this?

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suggestions with the most votes. To vote for this suggestion, click the "I

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I'm Running Excel 2007 on Vista. Trying to put error bars on a bar chart. Standard error works fine but standard deviation doesn't work - I get a row of bars the same length, hovering way above the top of the data series bars in a straight line. Did all latest updates this morning. Is this incurable Vista weirdness? Anybody experienced this or knows how to fix it??? Cheers!

thanks,

emily

How can I create horizontal standard deviation lines that automatically update as the data is entered?

Thanks,

Chris

samples using chunky blue coloured bars.

What I would also like to do is, on the same graph, show the standard

deviation of each sample on the relevant blue bar, such that a vertical line

is inserted in the middle of each of the blue bars that shows 1 standard

deviation up the way and one standard deviation down the way (i.e. so that it

looks like 2 letter "T"'s, symmetrically above and below each other).

I've not explained that very well but I hope someone knows roughly what I'm

trying to do - its really a typical statistical chart that shows both mean

and standard deviation on the same graph.

I can post an image if this site allows and if it would be useful.

Regards

How do you make each data point have a different standard deviation value for

its error bar?

its error bar?

to create graphs showing TWO standard deviations as error bars. Working

with one SD is no problem; I just set custom Y error bars to

=DATA_SHEET!$CO$2:$CO$367 (lots of columns, one row per day of year).

But I've had zero sucess in getting two SDs to show. I have 30 columns

of SDs, so I don't want to go building another 30 computed columns if

it can be avoided.

Is there any way at all to do this through the custom Y error bar

formula alone?

Thanks

Robert Smith

triplicate. I find that I often need to plot these on a bar chart eg cell

number with two growth conditions at a variety of different time points. If

you count the cell number in three separate flasks for each growth condition

at each time point, then you can work out the mean cell number and the SEM or

standard deviation. I want to plot both the mean and the SD for each point by

using error bars. Obviously the SD is different for each point. Excel will

not let you do this and it makes me crazy because I have to plot cell counts

for each time point and each condition as a separate series. Why is there no

"vary error bar by point" command like there is for colour???????

Does anyone know of an easier way please?

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I've calculated the standard error margin (SEM) for each point in my

bar graph - this varies as each point is the average of a varying

number of samples.

This SEM value is represented in the same units as the data on the bar

graph (second), and is in a column that corresponds to the values for

the bars in the bar graph. (i.e. A1 = Bar 1 value, B1 = Bar 1 value

SEM).

When I define the error bar using the 'custom error bars' option in the

'add error bars' tab I select the column (I drag from the top of the SEM

data to the bottom) for the SEM data. However, Excel gives seemingly

spurious error bars when I do this. I'm getting errors of several times

the values according to the error bars, when the actual SEM is equal to

zero, for example.

How do I define the error bars correctly? Is because I am working in

seconds?

I have attached the sheet. The values of the bar chart are in column

AU, and the values of each point's SEM is in column BB.

(You'll also notice the ridiculous formula I came up with for

calculating the SEM! I'm not very good with Excel!)

Thanks for your help,

Adam

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triangle figures. Very large ones across the graph. I have googled and there

are other posts concerning such gremlins. None describe a fix. Has anyone had

a problem with this?

I've calculated the standard error margin (SEM) for each point in my bar graph - this varies as each point is the average of a varying number of samples.

This SEM value is represented in the same units as the data on the bar graph (second), and is in a column that corresponds to the values for the bars in the bar graph. (i.e. A1 = Bar 1 value, B1 = Bar 1 value SEM).

When I define the error bar using the 'custom error bars' option in the 'add error bars' tab I select the column (I drag from the top of the SEM data to the bottom) for the SEM data. However, Excel gives seemingly spurious error bars when I do this. I'm getting errors of several times the values according to the error bars, when the actual SEM is equal to zero, for example.

How do I define the error bars correctly? Is because I am working in seconds?

I have attached the sheet. The values of the bar chart are in column AU, and the values of each point's SEM is in column BB.

(You'll also notice the ridiculous formula I came up with for calculating the SEM! I'm not very good with Excel!)

Thanks for your help,

Adam

I want to make a bar chart using the data average as a single bar of data (a single value) and then use a different value to display the standard deviation as an error (both + and -) overlapping the same bar (the average). How do I do this in excel 2007?

thanks ,

rob

triplicate. I find that I often need to plot these on a bar chart eg cell

number with two growth conditions at a variety of different time points. If

you count the cell number in three separate flasks for each growth condition

at each time point, then you can work out the mean cell number and the SEM or

standard deviation. I want to plot both the mean and the SD for each point by

using error bars. Obviously the SD is different for each point. Excel will

not let you do this and it makes me crazy because I have to plot cell counts

for each time point and each condition as a separate series. Why is there no

"vary error bar by point" command like there is for colour???????

Does anyone know of an easier way please?

----------------

This post is a suggestion for Microsoft, and Microsoft responds to the

suggestions with the most votes. To vote for this suggestion, click the "I

Agree" button in the message pane. If you do not see the button, follow this

link to open the suggestion in the Microsoft Web-based Newsreader and then

click "I Agree" in the message pane.

http://www.microsoft.com/office/comm...excel.charting

The Y-axis on my graph needs to be a logarithmic scale.

Does anyone know if this can be done in excel?

Regards

I've attached both an Excel file with the data, and a .jpg file that I generated with SigmaPlot showing how it should look. Each error bar is individual to the bar that it's associated with (values in the Excel file).

Does anyone know how to enter individual standard deviation values for each data point in Excel 2007? I could just use SigmaPlot to do all of the graphs, but that program is much slower to use, and the graphs are very ugly; since I need many of these graphs for a presentation, it's important that they look uniform and nice.

Thanks so much in advance.

have a set of data, eight numerical y values, and each one has a different

standard deviation. I plot a histogram and use custom error bars selecting

+/- my deviations from the worksheet (which are approx 10% of numerical value

so easy to see) and then click ok but nothing appears on my chart just two

circles (doing the same in excel 2003 works fine, I see them fine). If I

create the error bars in excel 2003 and open them in 2007 they appear and

when I go into custom error bars the correct worksheet cells appear, however

if I click ok they dissapear (clicking cancel they remain). Its infuriating!

Any suggestions?

I have the following table

day Night

Mean 159.44 161.07

SD 1.58 1.84

The second raw is the mean value and the third is the standard

deviation of some data in day and night. I used Column Chart to Show

the differences between the Mean value of results in Day and Night. I

wanted to use the standard deviation for the Y-Error bar. But when I

try to do that, I can only assign on of the Sd(1.58 or 1.84) for both

of the column. I wonder to know if it is possible to assign different

SD for different Column.

Thanks,

deviation error bars and custom colors and then have the chart use that as

the default? I couln't use a format painter to do.

my main question is, how does one add different standard dev bars on 2D bar graphs?

looking at my excel sheet, the tab (Grapth_Theme_Year) is based on the tab (datatable).

If you noticed in datatable tab, 2008 and 2009 has different SD. How do I add that in Excel 2007? I found the add error bar tab in the menu, but it seems that I can only add one constant value for both bars (so if it's 2, it would be 2008 +- 2 and 2009 +- 2.. instead of it should be 2008 +-1 and 2009 +-2).

Secondly, I would like to add additional information for the datatable under the Grapth_Theme_Year's graph. So i would like the table to show the SD, low and high values that is listed under the datatable tab. how does one do this?

The other graph, I would like to just add the error bar to the last (red) bar.

I basically want my graphs to look like the one in the sample.xls file. This graph was copied from a powerpoint slide over to excel. Sadly, it was pasted into the powerpoint as a picture, so I can't figure out how they did it. So as you notice in the sample.xls file, the bar graph is graphing the value, there is a different stand dev error bar for each bar graph and the datatable has extra elements that was not in the graph (best in class, low, mean). That is what basically what I want for my data. How does one do this in Excel 2007?

No luck finding an answer? You could always try Google.