Find the mean of the data set $3,5,7,9,11$.

Step-by-step solution

1. Add all the data values: $3+5+7+9+11=35$.
2. Count the number of values: $n=5$.
3. Divide the sum by $n$ to obtain the mean: $35/5=7$.

Concept tested: Mean of a simple data set

Published 10 October 2026 · How this solution was prepared and checked