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#1
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Trendlines
I am doing a basic spreadsheet that has a linear trendline applied, how do i
show the end value of the forecasted trendline on the spreadsheet |
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#2
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Trendlines
One way would be to use the Slope and Intercept formula. You can get this
equation by right clicking your trend line and selecting Format TrendLine... - Options tab - check Show Equation on Chart. Here is a sample I did... In Cells A1:B13 Month Sales Jan 500 Feb 400 Mar 600 Apr 400 May 500 Jun 400 Jul 300 Aug 400 Sep 500 Oct 400 Nov 300 Dec 200 Now use the Formula Slope and Intercept... =SLOPE( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) -19.23 =INTERCEPT( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) =533.33 To get the end of the trend line do something like this... =INTERCEPT( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) + SLOPE( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) * 12 302.56 -- HTH... Jim Thomlinson "Garf" wrote: I am doing a basic spreadsheet that has a linear trendline applied, how do i show the end value of the forecasted trendline on the spreadsheet |
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#3
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Trendlines
Look in XL help file about LINEST function. This will give you the slope and
y-itnercept of your trendline, which you can then use to calculate any x or y value if you know the corresponding value. -- Best Regards, Luke M *Remember to click "yes" if this post helped you!* "Garf" wrote: I am doing a basic spreadsheet that has a linear trendline applied, how do i show the end value of the forecasted trendline on the spreadsheet |
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#4
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Trendlines
"Jim Thomlinson" wrote: One way would be to use the Slope and Intercept formula. You can get this equation by right clicking your trend line and selecting Format TrendLine... - Options tab - check Show Equation on Chart. Here is a sample I did... In Cells A1:B13 Month Sales Jan 500 Feb 400 Mar 600 Apr 400 May 500 Jun 400 Jul 300 Aug 400 Sep 500 Oct 400 Nov 300 Dec 200 Now use the Formula Slope and Intercept... =SLOPE( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) -19.23 =INTERCEPT( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) =533.33 To get the end of the trend line do something like this... =INTERCEPT( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) + SLOPE( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) * 12 302.56 -- HTH... Jim Thomlinson "Garf" wrote: I am doing a basic spreadsheet that has a linear trendline applied, how do i show the end value of the forecasted trendline on the spreadsheet |
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#5
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Trendlines
Thanks Jim
Will give it a go Regards Garf "Jim Thomlinson" wrote: One way would be to use the Slope and Intercept formula. You can get this equation by right clicking your trend line and selecting Format TrendLine... - Options tab - check Show Equation on Chart. Here is a sample I did... In Cells A1:B13 Month Sales Jan 500 Feb 400 Mar 600 Apr 400 May 500 Jun 400 Jul 300 Aug 400 Sep 500 Oct 400 Nov 300 Dec 200 Now use the Formula Slope and Intercept... =SLOPE( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) -19.23 =INTERCEPT( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) =533.33 To get the end of the trend line do something like this... =INTERCEPT( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) + SLOPE( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) * 12 302.56 -- HTH... Jim Thomlinson "Garf" wrote: I am doing a basic spreadsheet that has a linear trendline applied, how do i show the end value of the forecasted trendline on the spreadsheet |
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#6
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Trendlines
Cheers Luke
Will give it a go Regards Garf "Luke M" wrote: Look in XL help file about LINEST function. This will give you the slope and y-itnercept of your trendline, which you can then use to calculate any x or y value if you know the corresponding value. -- Best Regards, Luke M *Remember to click "yes" if this post helped you!* "Garf" wrote: I am doing a basic spreadsheet that has a linear trendline applied, how do i show the end value of the forecasted trendline on the spreadsheet |
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#7
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Trendlines
Hi Jim
You wouldn't happen to know the equation for a Logarithmic trendline would you, it seems to fit my dataset better "Jim Thomlinson" wrote: One way would be to use the Slope and Intercept formula. You can get this equation by right clicking your trend line and selecting Format TrendLine... - Options tab - check Show Equation on Chart. Here is a sample I did... In Cells A1:B13 Month Sales Jan 500 Feb 400 Mar 600 Apr 400 May 500 Jun 400 Jul 300 Aug 400 Sep 500 Oct 400 Nov 300 Dec 200 Now use the Formula Slope and Intercept... =SLOPE( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) -19.23 =INTERCEPT( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) =533.33 To get the end of the trend line do something like this... =INTERCEPT( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) + SLOPE( B2:B13, {1,2,3,4,5,6,7,8,9,10,11,12}) * 12 302.56 -- HTH... Jim Thomlinson "Garf" wrote: I am doing a basic spreadsheet that has a linear trendline applied, how do i show the end value of the forecasted trendline on the spreadsheet |
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Linear Mode
