Q1. Consider the following time series.
t 1 2 3 4 5 6 7
Yt 120 110 100 96 94 92 88
a. Construct a time series plot. What type of pattern exists in the data?
b. Develop the linear trend equation for this time series.
c. What is the forecast for t 8?
Q2. Consider the following time series.
t 1 2 3 4 5 6 7
Yt 82 60 44 35 30 29 35
a. Construct a time series plot. What type of pattern exists in the data?
b. Using Minitab or Excel, develop the quadratic trend equation for the time series.
c. What is the forecast for t 8?