**5. Conclusions**

10 Multivariate Analysis in Management, Engineering and the Sciences

99

**Percent**

1

99

**Percent**

1

**Figure 4.** Normality Test for the property RON


**RON (Gasoline)** Normal

> Mean -5,32907E-17 StDev 1 N 25 AD 0,371 P-Value 0,395

> Mean -6,27276E-17 StDev 1 N 25 AD 0,144 P-Value 0,964

**Standardize Residuals**

**Viscosity (Diesel)** Normal


**Standardize Residuals**

**Figure 5.** Normality Test for the property viscosity (diesel)

The following conclusions can be drawn from the results of this study:

It was possible to model mathematically the properties octane number and viscosity of the products gasoline, diesel and jet fuel.

The developed models were externally validated according to ASTM D-6122 and their predictions have precision equivalent to the reference methods.

The results were used in an oil refinery and contributed immensely to speed up the decision-making in blendings systems. Unlike the laboratory trials, the response time of a property along with the computational time does not exceed three minutes.
