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The grades received on a test by twenty students were 100, 55, 75, 80, 65, 65, 95, 90, 80, 45, 40, 50, 85, 85, 85, 80, 80, 70, 65, and 60. What is the average of these grades?
A.) 70.5
B.) 72.5
C.) 77
D.) 80.3
E.) 100

Respuesta :

shl
To find the average of a set of numbers you add them all together. Then divide by the amount of numbers
B.72.5 , because if you add all those numbers and divide it by how many number there are(there's 20 numbers) you'll get 72.5