Average Daily TV Viewing Time Per U.S. Household | |||
Year | Hours | Min | Total Min |
1950 | 4 | 35 | 275 |
1955 | 4 | 51 | 291 |
1960 | 5 | 6 | 306 |
1965 | 5 | 29 | 329 |
1970 | 5 | 56 | 356 |
1975 | 6 | 7 | 367 |
1980 | 6 | 36 | 396 |
1985 | 7 | 10 | 430 |
1990 | 6 | 53 | 413 |
1995 | 7 | 17 | 437 |
2000 | 7 | 35 | 455 |
2005 | 8 | 11 | 491 |
2010 | 8 | 21 | 501 |
(a) | Fit a linear trend to the Total Min data. (Round your answers to 2 decimal places.) |
yˆ= ____t + _______ |
Output using excel:
Regression Statistics | ||||||
Multiple R | 0.992035 | |||||
R Square | 0.984134 | |||||
Adjusted R Square | 0.982692 | |||||
Standard Error | 9.798749 | |||||
Observations | 13 | |||||
ANOVA | ||||||
df | SS | MS | F | Significance F | ||
Regression | 1 | 65512.14 | 65512.14 | 682.308 | 3E-11 | |
Residual | 11 | 1056.17 | 96.01548 | |||
Total | 12 | 66568.31 | ||||
Coefficients | Standard Error | t Stat | P-value | Lower 95% | Upper 95% | |
Intercept | -7124.89 | 287.6402 | -24.7702 | 5.33E-11 | -7757.98 | -6491.8 |
Year | 3.794505 | 0.145266 | 26.12103 | 3E-11 | 3.474776 | 4.114235 |
a) Linear trend:
ŷ = 3.79 t + (-7124.89)
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