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Topic: Creating Histograms (Read 2134 times) |
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Bjwert
Newbie
Posts: 2
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Creating Histograms
« on: Jul 31st, 2007, 1:42pm » |
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Hello,
I'm having difficulties with producing histograms within Autograph. I add the raw data, but then I'm unsure of what to place in the box named "left limits and final". If I am to change these numbers, my histogram changes drastically, and I obviously want my graph to be accurate and reliable.
I have tried to find answers through the Autograph help system, however when I click on the "Histogram Measurement" option, I am told that the tutorial is not installed. I also receive then same message when I try to view the tutorial through the Internet.
Any help as to any rules or advice on what numbers must be placed within the box is much appreciated.
Regards,
Brad
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Bjwert
Newbie
Posts: 2
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Re: Creating Histograms
« Reply #1 on: Aug 8th, 2007, 11:46am » |
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This is the box which I am unsure of how to fill:
Any help/advice is much appreciated.
~Brad
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Douglas
Autograph Staff
Douglas Butler
Gender: 
Posts: 49
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Re: Creating Histograms
« Reply #2 on: Aug 11th, 2007, 1:42pm » |
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Brad
> I'm having difficulties with producing histograms within Autograph.
Sorry to hear this.
> I add the raw data, but then I'm unsure of what to place in the box named "left limits and final".
Here you are choosing to put in the classes manually, eg
0, 40, 50, 55, 60, 100
which is useful if you want them to be unequal.
Here the left limits are 0, 40, 50, 55, 60
and the final is 100
> If I am to change these numbers, my histogram changes
> drastically
It would do as it affects the frequencies. You should of course be using Frequency Density (Histogram dialogue box) if the classes are unequal.
> I have tried to find answers through the Autograph help
> system, however when I click on the "Histogram
> Measurement" option, I am told that the tutorial is not
> installed. I also receive then same message when I try to
> view the tutorial through the Internet.
Odd - it is definitely there on
http://www.autograph-maths.com/inaction/
Hope this helps
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Douglas Butler
iCT Training Centre, Oundle School
Peterborough, UK
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