Answer:
A.) 49.3
Explanation:
To find the mean of a given set of data points, you need to add up all of the numbers given in the data set. So let's add these altogether:
43 + 55 + 51 + 62 + 64 + 38 + 35 + 45 + 51 = 444.
With that said, now we have to divide the number of how many numbers given into our so-far-answer of 444. There are 9 numbers in this data set, so we need to divide 9 into 444.
444 ÷ 9 = 49.33333...
The question asks us to round to the nearest tenth, which would be the first 3 in this situation. Normally, we would need a longer process for rounding, but since these are all 3's, we can do this faster. We can get rid of the other 3's and be left with the first letter of A.)'s answer.
I hope that this helps.