pMINITAB - Regression Analysis: FluDeaths1 vs FluCases0
pThe regression equation is
pFluDeaths1 = 49.3 + 0.0722 FluCases0
p
pPredictor        Coef     SE Coef          T        P
pConstant        49.29       29.85       1.65    0.121
pFluCases     0.072222    0.008741       8.26    0.000
p
pS = 85.07       R-Sq = 83.0%     R-Sq(adj) = 81.8%
p
pNumber of observation pairs =16  è df = n – 2 = 14
pFor a 95% CI under a t distribution with df 14, we use t* = 2.145.
p
pm = t*SEb = 2.131 * 0.008741 ≈ 0.0187
p95% CI for the slope b is: b ± t*SEb = 0.0722 ± 0.0187 ≈ 5.4% to 9.1%
p
pWe are 95% confident that somewhere between 5.4% and 9.1%
of the people diagnosed one week with the flu died of its
complications the next week during the 1918 epidemic.