The formula for calculating the average of numbers is:
[tex]\begin{gathered} \bar{x}=\frac{\sum^n_{i=1}x_i}{n}=\frac{x_1+x_2+x_3+\cdots x_n}{n} \\ \text{where,} \\ x_1+x_2+x_3+\cdots x_n\text{ are the inidividual values.} \\ n\text{ is the total number of values.} \end{gathered}[/tex]Thus, we can solve the question as follows:
[tex]\begin{gathered} \bar{x}=\frac{38+48+58+68}{4}=\frac{212}{4} \\ \\ \therefore\bar{x}=53 \end{gathered}[/tex]Thus, the Answer is 53 OPTION 1
