">https://www.pewresearch.org/science/2018/05/14/majorities-see-government-efforts-to-protect-the-environment-as-insufficient/</a>
</p>


<h3>Examples</h3>

<pre><code class='language-R'>
data(pew_energy_2018)
lapply(pew_energy_2018, head)
lapply(pew_energy_2018, length)
lapply(pew_energy_2018, table)
Prop &lt;- function(x) {
  table(x) / length(x)
}
lapply(pew_energy_2018, Prop)
</code></pre>

</main>

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