## (Intercept)  40.6488     3.1335  12.972 7.77e-14 ***
## drat:wt      -1.8339     0.2728  -6.723 1.89e-07 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 3.87 on 30 degrees of freedom
## Multiple R-squared:  0.6011, Adjusted R-squared:  0.5878 
## F-statistic:  45.2 on 1 and 30 DF,  p-value: 1.886e-07</code></pre>
<div class="sourceCode"><pre class="sourceCode r"><code class="sourceCode r"><span class="kw">summary</span>(<span class="kw">lm</spa