Call: lm(formula = log10(newborn.g.) ~ log10(mass.g.), data = mammal_histories) Residuals: Min 1Q Median 3Q Max -1.61535 -0.18339 0.04104 0.21687 0.91622 Coefficients: Estimate Std. Error t value Pr(>|t|) (Intercept) -1.139431 0.027118 -42.02 <2e-16 *** log10(mass.g.) 0.949620 0.007812 121.57 <2e-16 *** --- Signif. codes: 0 ‘***’ 0.001 ‘**’ 0.01 ‘*’ 0.05 ‘.’ 0.1 ‘ ’ 1 Residual standard error: 0.3155 on 814 degrees of freedom (624 observations deleted due to missingness) Multiple R-squared: 0.9478, Adjusted R-squared: 0.9477 F-statistic: 1.478e+04 on 1 and 814 DF, p-value: < 2.2e-16