Freshman tuitions (in thousands of dollars) at Penn State Harrisburg are described by the time-series plots in Figs. 124 and 125 for various years, where the starting year of each academic year is shown on the horizontal axis.
Fig. 124

Fig. 125

a. If the college wants to de-emphasize how much its tuition has increased, which time-series plot would it want to display? Explain.
b. From which time-series plot can you better estimate the tuition in 2011? What is that tuition?
c. From which year to the next did the tuition change the most? Estimate that change.
d. Estimate the change in tuition from 2008 to 2012. If the tuition were to change that same amount from 2012 to 2016, what would the tuition be in 2016? Do you have much faith that your result will turn out to be true? Explain.

Transcribed Image Text:

Penn State Harrisburg Tuitions 15 12 9 6 3 0 2009 2010 Year 2008 2011 2012 Penn State Harrisburg Tuitions 13.5 13.0 12.5 12.0 11.5 11.0 10.5 2008 2009 2010 2011 Year