Table 2. Regression with seasonal dummies (Enrollment Bo + B1-Spring + B2•Fall + B3-Year) SUMMARY OUTPUT Regression Statistics Multiple R R Square Adj. R Square Standard Error ? Observations 6 ANOVA df SS MS Signif. F Regression 3 8590.667 515.44 0.001937 Residual ? ? Total 25805.33 Coefficients Stand. Error t Stat P-value Lower 95% Upper 95% Intercept 27 5.773503 4.676537 2.158623 51.84138 Spring 115 28.16913 0.001258 97.43449 132.5655 Fall 154 4.082483 ? 0.000702 136.4345 171.5655 Year ? 3.333333 -2.8 0.107393 -23.6755 5.008842

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