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Statistics

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To conduct a valid regression analysis, both x and y must be approximately normally distributed.

True
False

  • Statistics - ,

    True.

  • Statistics - ,

    FALSE... Sorry Math Guru.
    Conditions for a regression analysis are

    We have n observations on an explanatory variable x and a response variable y. Our goal is to study or predict the behavior of y for given values of x.

    For any fixed value of x, the response varies according to a normal distribution. Repeated responses y are independent of each other.
    The mean response ìy has a straight-line relationship with x:
    ìy = á + âx

    The slope â and intercept á are unknown parameters.

    The standard deviation of y ( call it ó) is the same for all values of x. The value of ó is unknown.

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