Question

Carl earned grades of 62, 78, 59, and 89 on four math tests.What is the mean of his grades?A. 68.5B. 70C. 72D. 74E. 75.5

Answer 1

we have to sum all data and then divide between the number of data

$62+78+59+89=288$$\frac{288}{4}=72$

the mean is 72, so the right option is C