<h2><em>Answer: The mean number of this data set is 43. The mean represents the average number of minutes Julio practiced on his trumpet for 6 days.</em></h2>
Explanation:
<u><em>To find the "mean" you need to count how many numbers are in the data set. Then add up all the numbers in the data set. </em></u>
In this case you have six numbers in the data set, and all the numbers added up together(21+30+39+43+58+67) are 258.
<u><em>After adding up all the numbers, divide them by how many numbers are in the data set.</em></u>
