Using the lengths in chest sizes in and weights lb of bears from data set the resulting regression equation is Weight 274 0 426 Length 12 1 Chest Size The P value is 0 000 and the adjusted R2 value is 0 925 If an additional predictor variable of neck size in is included the P value becomes 0 000 and the adjusted R2 becomes 0 933 Why is it better to use values of adjusted R2 instead of simply using values of R Choose the correct answer below KIIB OA The unadjusted R2 decreases or remains the same as more variables are included but the adjusted R2 is adjusted for the number of variables and sample size OB The unadjusted R2 increases or remains the same as more variables are included but the adjusted R2 is adjusted for the number of variables and sample size OC The unadjusted R2 can only be calculated for regression equations with two or fewer predictor variables while the adjusted R2 can be calculated for regression equations with any number of predictor variables OD The unadjusted R2 can only be calculated for regression equations with P values greater than 0 while the adjusted R2 can be calculated for regression equations with any manner of P value