The average sat verbal score for students

Reference no: EM13530996

1. The average SAT verbal score for students from one high school over the last ten exams is

508, 490, 502, 505, 493, 506, 492, 490, 503, 501

Estimate the parameter (b0, b1) of the linear trend equation: T = b0 + b1 t, where T = trend value of the time series in period t.

2. Quarterly billing for water usage is shown below.

Year
Quarter 1 2 3 4
Winter 64 66 68 73
Spring 103 103 104 120
Summer 152 160 162 176
Fall 73 72 78 88

The forecast equation is: Ft = 64.875 - 6.1375Qtr1t + 32.325Qtr2t + 86.0375Qtr3t + 1.2875 (t).
Forecast the summer of year 5 and spring of year 6.

Reference no: EM13530996

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