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Equation of a lineThis isn't exactly a chemistry related question, but it does in the context I have to work with(The data are pressure versus volume). I've analyzed a sample of around 15 volume's with their corresponding pressure. The document I have to fill asks me to get an approximation of the linear graph equation. Clearly getting two points and finding ax + b would be the idea here. But it states that I need to account all the points I've collected. Therefore I'm left clueless on how I could deal with finding the equation. Here are some of the values: Volume (ml) 1/P (kPa) 15 0.005179 20 0.006653 25 0.008244 30 0.009814 35 0.011325 So does anyone have any idea on how I should get the linear graph equation considering most points to get an average? |

Re: Equation of a lineYou need to do a least squares fit. http://en.wikipedia.org/wiki/Least_squares http://mathworld.wolfram.com/LeastSquaresFitting.html |

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