Math

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No clue how to solve this.

If you have performed a linear regression of data that ranges from 1-10 and has a y=2x+5, what is the extrapolated value for y at 11

  • Math -

    this is easier than you are trying to envision it. You have a bunch of data, and you have found that the straight line of best fit is

    y = 2x+5

    You have no real formula that produces every data point in the interval [1,10], but this line does as well as you can.

    So, now you have a line which closely fits all observed data. To extrapolate to other data, all you can do is estimate based on your calculations so far.

    y(11) = 27

  • Math -

    Thanks

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