Question 7 7.1 Consider the following quarterly demand levels for electricity (1000 megawatts) in Cape Town from 1988 to 1991. 1988 1989 1990 1991 Jan-Mach 21 35 39 76 Apr-June 42 54 82 114 July-Sept 60 91 136 160 Oct-Dec 12 14 28 40 a) Find the least squares trend line for electricity demand using x=0. b) Find the seasonal index for each Quarter. c) Estimate the demand for electricity for Quarter 4, 1992.
Question 7 7.1 Consider the following quarterly demand levels for electricity (1000 megawatts) in Cape Town from 1988 to 1991. 1988 1989 1990 1991 Jan-Mach 21 35 39 76 Apr-June 42 54 82 114 July-Sept 60 91 136 160 Oct-Dec 12 14 28 40 a) Find the least squares trend line for electricity demand using x=0. b) Find the seasonal index for each Quarter. c) Estimate the demand for electricity for Quarter 4, 1992.
Chapter4: Linear Functions
Section4.3: Fitting Linear Models To Data
Problem 24SE: Table 6 shows the year and the number ofpeople unemployed in a particular city for several years....
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