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Math Help - query about regression

  1. #1
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    query about regression

    Can any one please tell me?

    “How to calculate coefficient of independent variable in non linear regression?”

    For example I want to calculate value of y

    Y=a + b*x1 + c*x2 + d*x3

    Here;

    Y= Dependant variable
    a, b, c, d = constant

    x1, x2, x3= independent variable.

    In this case how to calculate value of a, b, c and d. If you have any idea please tell me how to calculate it
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  2. #2
    MHF Contributor matheagle's Avatar
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    I'm not sure what you're asking either.
    This is linear regression and it seems that you want to find the estimates of those constants.
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  3. #3
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    yes....i wanted to calculate values of constants(coefficients). but for non-linear equation.
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  4. #4
    MHF Contributor matheagle's Avatar
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    well that model is linear
    What is your NON linear model that you want to use to estimate the data?
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  5. #5
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    my equation is

    y=a*e^(b*x)

    e=exponential
    y=defendant variable
    x is independent variable
    a and b are constant
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  6. #6
    MHF Contributor matheagle's Avatar
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    Quote Originally Posted by jpnikam View Post
    my equation is

    y=a*e^(b*x)

    e=exponential
    y=defendant variable
    x is independent variable
    a and b are constant
    defendant rests?

    just take the log

    \ln y=\ln a +bx is linear and use what you know to estimate these constants
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