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Vitor Duarte Teodoro, April 2009. Organize a table for computations... Data for linear fitting These columns accept 100 pairs (x, y) Note: columns G to.

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Presentation on theme: "Vitor Duarte Teodoro, April 2009. Organize a table for computations... Data for linear fitting These columns accept 100 pairs (x, y) Note: columns G to."— Presentation transcript:

1 Vitor Duarte Teodoro, April 2009

2 Organize a table for computations... Data for linear fitting These columns accept 100 pairs (x, y) Note: columns G to L use function ISNUMBER()

3 Some details (I)

4 Some details (II)

5 Some details (III)

6 Formulas used for computations

7 Making an appropriate graph... Note the details of the graph...

8 The graph and all computations change with new data

9 Be carefull when deleting data to introduce new values!

10 Excel has a powerful function for linear regression: LINEST

11

12 Important: LINEST is an array formula...

13 LINEST

14 An example using LINEST

15 Excel also has a Data Analysis Toolpak

16 Using the Data Analysis Toolpak

17 And the output is... But this output is not interactive

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