Posted by **Mike** on Tuesday, November 6, 2012 at 9:56am.

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

True

False

- Statistics -
**MathGuru**, Wednesday, November 7, 2012 at 5:57pm
True.

- Statistics -
**Becca**, Tuesday, March 19, 2013 at 5:35pm
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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