a. After moving the cubes so that each stack has the same number of cubes, we got 7 cubes in each stack.
Step-by-step explanation:
In total, there are 35 cubes. Since there are 5 stacks, we divide 35 by 5 and got 7. Hence, there must be 7 cubes in each stack.
b. To determine the mean, simply do the same process above. Add the given numbers and divide the sum by the total numbers given.
Since there are 5 numbers, divide 35 by 5.
Hence, the mean is 7.
c. Yes, the values in parts a and b are equal. When we make the stacks equal, the number of cubes in each stack must be the mean of the original stacks because the mean is the average of the number of stacks. (Option 3)