ass='va'>x4</span>, <span class='va'>x5</span><span class='op'>)</span></span>
<span class='r-in'><span class='va'>lm1</span> <span class='op'>=</span> <span class='fu'><a href='https://rdrr.io/r/stats/lm.html'>lm</a></span><span class='op'>(</span><span class='va'>y</span> <span class='op'>~</span> <span class='va'>.</span>, data <span class='op'>=</span> <span class='va'>dat</span><span class='op'>)</span></span>
<span class='r-in'><span class='co'># \dontshow{</span></span>
<span class='r-in'><span class