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# Excel - Series Fill Problems

### #1 blrjohn07 Posted 19 January 2008 - 03:18 AM

blrjohn07

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Guys.....
I got a silly problem....not getting exact logic for dat...try to help...

See Image 1

I am getting the result 4 nd I understand how its coming....

Image 1

Now see Image 2

How its getting 12.333333 did get the logic

Image 2

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### #2 Ax238 Posted 19 January 2008 - 05:02 PM

Ax238

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Hello blrjohn07,

The first one is fine because you add one to each successive number. The second version does not have a standard increment. Going from adding three to adding four won't give you good results in trying to fill a series. I don't think it's possible to change the increment number as the fill goes along. I'm also not exactly sure what you are wanting Excel to do, but you'll probably be better off with an Excel formula.

Regards,

Ax
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### #3 blrjohn07 Posted 21 January 2008 - 09:04 AM

blrjohn07

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Hello blrjohn07,

The first one is fine because you add one to each successive number. The second version does not have a standard increment. Going from adding three to adding four won't give you good results in trying to fill a series. I don't think it's possible to change the increment number as the fill goes along. I'm also not exactly sure what you are wanting Excel to do, but you'll probably be better off with an Excel formula.

Regards,

Ax

Dear AX,

Many thanks for your reply....actualy my point is....see d image 2...excel showing dat value 12.33333...and ofcourse excel doing some calculations..what is dat calculation ?? how it is getting dat value ???
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### #4 Ax238 Posted 21 January 2008 - 05:22 PM

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It's getting that value because it is trying to make sense of the non-linear increment that you are attempting to employ. Basically, it is putting the values (2,5,9) on a scatter plot and applying a trendline to come up with the next value. The specific formula for the trendline it is coming up with is y = 3.5x - 1.6667

So Excel is really interpreting it as the following:
1: 1.8333
2: 5.3333
3: 8.8333
4: 12.3333
...

Hope this helps,

Ax
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### #5 blrjohn07 Posted 22 January 2008 - 04:39 AM

blrjohn07

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dear AX,

Many thanks for ur nice reply.What u explained it makes sense...absolutely no doubt about it...but my friend...I think i m not so xpart on math for dat still i m not clear about it...

xactly Y = 3.5x - 1.6667 whats d formula ???

I m once again sorry to disturb dude....could u please give any other explanatoin ????
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### #6 Ax238 Posted 23 January 2008 - 02:40 PM

Ax238

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No need for an apology, you aren't disturbing me, although I am finding it very difficult to understand the words that you are typing. Could you please try typing in complete sentences using complete words so that I can assist you better?

Thanks,

Ax
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