The SUV also offers two versions of its Quadra-Trac all-wheel drive system, ranging from the pavement-only Quadra-Trac I designed for inclement weather and occasional off-road use to the go-anywhere Quadra-Trac II, which includes low-range gearing for the muddiest, most challenging off-road trails.
SAP NetWeaver Process Integration. SAP NetWeaver Process Integration (SAP PI) is SAP's enterprise application integration (EAI) software, a component of the NetWeaver product group used to facilitate the exchange of information among a company's internal software and systems and those of external parties.
Then you square all the x-values and add them up. Sxx = (Sum of squares of x values) -[ n *(mean of x)Â² ] (n= number of data points) 2) Then you calculate Syy. This is similar because Syy = (Sum of squares of y values) - [n * (mean of y)Â² ] 3) Now you calculate Sxy.