Hi there. Does anybody here happen to know how to perform linear regression?

As in, I've got a list of data points that ought to lie in a nearly 
perfect straight line, and I want to discover what the slope and 
intercept of that line is. (But each individual point might contain a 
certain amount of measurement error.)

I've had a look on Wikipedia, but it starts talking about chi-squared 
and Student t-distributions and covariance and basically I have no clue 
what the hell any of it means. :-/

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