Assume that the data that has been used to formulate linear trend model in question 16.10 has also been used to formulate the following quadratic model:

a. Construct a table presenting the values of \(X\) and \(Y\). Plot it on a graph.

b. Make a graph, assuming the actual passengers travelled were \(181,184,230,235,302,409,458,639,647,792,801,942\)

c. Comment whether the model in 16.10 or 16.11 is a better fit.

Question 16.10

Assume the following linear trend forecasting model for the number of passengers travelling by air from 1975 to 1986:

a. Considering that the data has been collected from 1975 to 1986, explain how the value of X has been coded to derive the above equation.
b. Construct a table presenting the values of X and Y and plot it on the graph.
c. Predict the number of airline travelers in the year 1987.

Transcribed Image Text:

12025.3x + 3.69X