Investigation Solutions
Investigation 1 Solutions
1. \(y_1\sim73099.6 (1.21665)^{x_1}, y_1(10)=519482.084\ \text{PB}\)
2.The correlation coefficient is \(0.999\) indicating an extremely strong fit.
3. About \(21.665\%\)-this is the \(r\) in the model \(a(1+r)^t\)
Investigation 2 Solutions
1. A quadratic model, namely \(y_1\sim6.00649x_1^2+499.707x_1+15765.5\), has the best correlation coefficient of the proposed types.
2. Answers vary, In the year \(2021\) we evaluate \(y_1(45)=\$50415.48\).
Investigation 1 Solutions
1. \(y_1\sim73099.6 (1.21665)^{x_1}, y_1(10)=519482.084\ \text{PB}\)
2.The correlation coefficient is \(0.999\) indicating an extremely strong fit.
3. About \(21.665\%\)-this is the \(r\) in the model \(a(1+r)^t\)
Investigation 2 Solutions
1. A quadratic model, namely \(y_1\sim6.00649x_1^2+499.707x_1+15765.5\), has the best correlation coefficient of the proposed types.
2. Answers vary, In the year \(2021\) we evaluate \(y_1(45)=\$50415.48\).