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Determining the Regression Line

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Having trouble determining how to show that the regression line will always go through x bar and y bar (means). Basically show that when you substitute in x bar for x in Bo + B1x and simplify, you will get y bar as answer.

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The solution determines the regression line.

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Let us consider an example to prove that the regression will pass through . For further reference regarding the example please refer http://www.cs.usask.ca/resources/tutorials/csconcepts/1999_6/Tutorial/Forecasting/ra/regression2.html .

Units Sold Price Month
15 $225 March
12 $250 April
18 $200 May
21 $175 June
16 $185 July
20 $165 August

Consider Y as the sales and X as the price, ...

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