tents">
    <div class="page-header">
    <h1>Stress Data for Two-Way ANCOVA</h1>
    
    <div class="hidden name"><code>stress.Rd</code></div>
    </div>

    <div class="ref-description">
    
    <p>Researchers want to evaluate the effect of a new "treatment" and
 "exercise" on the stress score reduction after adjusting for "age".</p>
<p>Two-way ANCOVA can be performed in order to determine
 whether there is interaction between exercise and treatment on the stress
 score.</p>
    
    </div>

    <pre c