The Total Home-Game Attendance for Major-League Baseball Is the Sum

Essay

The total home-game attendance for major-league baseball is the sum of all attendees for all stadiums during the entire season.The home attendance (in millions)for a number of years is shown in the table below. $$\begin{array} { | c | c | } \hline \text { Year } & \text { Home Attendance (millions) } \\\hline 1978 & 40.6 \\\hline 1979 & 43.5 \\\hline 1980 & 43.0 \\\hline 1981 & 26.6 \\\hline 1982 & 44.6 \\\hline 1983 & 46.3 \\\hline 1984 & 48.7 \\\hline 1985 & 49.0 \\\hline 1986 & 50.5 \\\hline 1987 & 51.8 \\\hline 1988 & 53.2 \\\hline\end{array}$$ a)Make a scatterplot showing the trend in home attendance.Describe what you see. b)Determine the correlation,and comment on its significance.
c)Find the equation of the line of regression.Interpret the slope of the equation.
d)Use your model to predict the home attendance for 1998.How much confidence do you have in this prediction? Explain.
e)Use the internet or other resource to find reasons for any outliers you observe in the scatterplot.