The number of deaths caused by automobile accidents, D, per hundred thousand population in the United States is given for various years, t.

D. C. Heath, 1949, p. 246.)
a. Make a scatter plot of the data.
b. Find the three summary points.
c. Write the equation of the median-median line.
d. What does the slope mean?
e. Give a possible explanation for the drop in the number of auto deaths in 1932.
f. Would you use this model to predict the number of deaths from auto accidents in 2000? Explain why or why not.

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t 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 15.5T 17.1 18.0-19.6T20.8T 23.3. 24.5 T25.2-21.9 T23.3 EI