The final exam scores in a statistics class were as follows: 90, 70, 63, 98, 95, 32, 54, 89, 84, 80, 68, 71, 77, 71, 83 Find the
2 answers:
Answer:
75
Step-by-step explanation:
The mean [average] of a set of data is "the sum of all the numbers divided by the number of numbers".
<em>How many numbers are in the data set?</em>
<em>15</em>
<u>So we simply add all of them up and divide by sum by 15.</u> Doing so gives us the mean:
Mean =
The mean is 75
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The equation would be 4+x
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Subtract 4 from both sides. The four on the left would cancel out and the 13 on the right would now be a 9. Therefore, the answer is