The fan and motor for the blower is usually under dash on the passenger side behind the glove box. Most of the time it can be removed by removing the bolts (should be 10mm) from the bottom of the dash area. I did not get the model of your vehicle, but sometimes you will need to remove the glove box to access.
In statistics, the coefficient of determination, denoted R2 or r2 and pronounced R squared, is a number that indicates the proportion of the variance in the dependent variable that is predictable from the independent variable(s).
R Squared and Adjusted R Squared. Regression analysis evaluates the effects of one or more independent variables on a single dependent variable. Regression arrives at an equation to predict performance based on each of the inputs. The R Squared and Adjusted R Squared values give the goodness of fit. Anything over 0.80 (80%) is considered a good fit. R Squared can be biased. So, Adjusted R Squared tweaks the R Squared based on degrees of freedom. Analysis: If R Squared is greater than 0.80, as it is in this case, there is a good fit to the data. Some statistics references recommend using the Adjusted R Squared value.In this example, R Squared of 0.980 means that 98% of the variation can be explained the independent variables.