Question: Using the data from Problem 1.13: (a) Calculate the average rate of growth of the series. (b) Calculate the standard deviation around the average growth

Using the data from Problem 1.13:

(a) Calculate the average rate of growth of the series.

(b) Calculate the standard deviation around the average growth rate.

Problem 1.13

The following data show car registrations in the UK during 1970–91:

Year Registrations Year Registrations Year Registrations 1970 91.4 1978 131.6 1986 156.9

Year Registrations Year Registrations Year Registrations 1970 91.4 1978 131.6 1986 156.9 1971 108.5 1979 142.1 1987 168.0 1972 177.6 1980 126.6 1988 184.2 1973 137.3 1981 124.5 1989 192.1 1974 102.8 1982 132.1 1990 167.1 1975 98.6 1983 150.5 1991 133.3 1976 1977 106.5 1984 146.6 109.4 1985 153.5

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