Answer:
17.5
Step-by-step explanation:
You can find the mean of a data set by adding all numbers in the data set together and dividing by the amount of numbers in the given data set.
In this case, your data set is:
15 , 16 , 17 , 23 , 11 , 19 , 20 , 15 , 18 , 22 , 15 , 19 (12 numbers).
Firstly, add all the numbers together: [tex]15 + 16 + 17 + 23 + 11 + 19 + 20 + 15 + 18 + 22 + 15 + 19 = 210[/tex]
Next, divide 210 (total sum) with the amount of terms in total (12):
[tex]\frac{(210)}{(12)} = 17.5[/tex]
17.5 is already in the tenth digit place value, and so you do not need to round.
17.5 is your answer.
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Learn more about solving for mean, here:
https://brainly.com/question/26811484
