- Average/Mean Formula: [tex]\frac{\textsf{sum of all numbers in the data set}}{\textsf{how many numbers there are in the data set}}[/tex]
To find out if she met her goal, add the test scores and then divide by 4:
[tex]\frac{94+98+99+97}{4}=\frac{388}{4}=97[/tex]
Since the average of her test scores is 97, she had met her goal.
