December 2002
Intermediate to advanced
928 pages
85h 29m
English
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REGR . . .
REGR_regr_type(expr1,expr2) [OVER (analytic_clause)]
Computes the least-squares regression line to a set of number pairs returned by expr1 and expr2.
Parameters
- regr_type
May be any one of the following:
- SLOPE
Returns the slope of the line.
- INTERCEPT
Returns the Y intercept of the line.
- COUNT
Returns the number of non-NULL pairs used to calculate the line.
- R2
Returns the coefficient of determination (also known as the Chi-Squared or Goodness of Fit) for the line.
- AVGX
Returns the average of the independent variable (expr2) of the line after eliminating NULL values. The returned value can be NULL.
- AVGY
Returns the average of the dependent variable (expr1) of the line after eliminating NULL values. The returned value can be NULL.
- SXX
Computes the value of REGR_COUNT (expr1,expr2) * VAR_POP(expr2) after elimination of NULL expr1,expr2 pairs.
- SYY
Computes the value of REGR_COUNT expr1,expr2) * VAR_POP(expr1, expr2) after elimination of NULL expr1,expr2 pairs.
- SXY
Computes the value of REGR_COUNT (expr1,expr2) * VAR_POP(expr1,expr2) after elimination of NULL expr1,expr2 pairs.
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.