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The mean is the average...to find the mean, add up all the numbers, then divide by how many numbers there are.
Example :
ur set of numbers : 1,2,3,4
add up all the numbers and divide by how many there are :
(1 + 2 + 3 + 4) / 4 = 10/4 = 2.5...so 2.5 is ur mean (average)
Yes it's A cos that's the correct answer
Answer:
4 x 1 = 4 x 3 = 12 = 4 x 3
Step-by-step explanation:
sorry I'm having trouble with this too