A time series is shown in the table below: 
a.Plot the time series to determine which of the trend models appears to fit better.
b.Use the regression technique to calculate the linear trend line and the quadratic trend line.Which line fits better? Use the best model to forecast the value of y for time period 7.
Definitions:
Compounded Annually
Interest on an investment that is calculated once per year and added to the principal sum.
Monthly Payment
A fixed amount of money paid at regular monthly intervals for a service or to repay a loan.
Amortization Period
The length of time it takes to pay off a debt or loan in full through regular payments.
Compounded Quarterly
The process of calculating and adding interest to the principal sum of a deposit or loan every three months.
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