# Forecast or Trend formula

#### robb7833

##### New Member
I am trying to come up with a formula that would show what the next number would possibly be. I think it is probably much easier than I am making it. I have some dates and numbers below and they are for readings that should be turned in but if they are not we need a formula to estimate what would be the next reading would be based on the information we already have.
 10/22/2012 89262 11/20/2012 90991 12/18/2012 92769 1/29/2013 94269 2/28/2013 95769

<colgroup><col style="mso-width-source:userset;mso-width-alt:2596;width:53pt" width="71"> <col style="width:48pt" width="64"> </colgroup><tbody>
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I need to have some sort of formula that would give the next number that isn't obviously just giving 1500 added to it. The next number should always be higher than the last.

### Excel Facts

Which came first: VisiCalc or Lotus 1-2-3?
Dan Bricklin and Bob Frankston debuted VisiCalc in 1979 as a Visible Calculator. Lotus 1-2-3 debuted in the early 1980's, from Mitch Kapor.
Presumably the next number depends on the next date. In the example below, the next date is assumed to be 3/28/2013.
Excel Workbook
AB
1DateNumber
210/22/201289262
311/20/201290991
412/18/201292769
51/29/201394269
62/28/201395769
73/28/201397257
Sheet3

Presumably the next number depends on the next date. In the example below, the next date is assumed to be 3/28/2013.
Sheet3

 * A B 1 Date Number 2 10/22/2012 89262 3 11/20/2012 90991 4 12/18/2012 92769 5 1/29/2013 94269 6 2/28/2013 95769 7 3/28/2013 97257

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</tbody>

 Cell Formula B7 =ROUND(TREND(B2:B6,A2:A6,A7),0)

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Excel tables to the web >> Excel Jeanie HTML 4
awesome thank you!! thats exactly what I needed.

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