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okay in this video Iamp;#39;m going to go through an example and itamp;#39;s actually the same example itamp;#39;s in the text thatamp;#39;s example 4.3.3 on Computing Elite squares regression lineing now in the text I follow the formulas which are rather messy but they can be done without um without more than just a little desktop calculator but here Iamp;#39;m going to use wolf frame Alpha to compute the regression line okay so Iamp;#39;ve got five data points here um and the independent variable thatamp;#39;s the x value thatamp;#39;s listed as the miles per gallon fuel efficiency of the car and thatamp;#39;s the city fuel efficiency and then the dependent variable the Y value that is the weight of the car and intuitively there should be a relationship in general it tends to be that heavier cars get less um get a worse fuel efficiency so that the miles per gallon that should be lower so it seems like there should be a negative relationship between these two okay so to use w