We are given that car owners parallel park regularly = 26% .
And car owners don't park parallel regularly = 74%.
In order to check if Grafton picked the data fairly or not.
<em>We need to check if the total sum of percentage of car owners parallel park regularly and percentage car owners don't park parallel regularly should be equal to 100.</em>
If we add 26% + 74%, we get = 100%.
<h3>Therefore, Grafton picked the data fairly.</h3>