Answer :
Answer:
B
Step-by-step explanation:
The mean of a data set is calculated as
• mean = [tex]\frac{sum}{count}[/tex]
The sum of the 12 values ( count ) is
sum
= 227 + 219 + 212 + 212 + 212 + 212 + 219 + 215 + 215 + 215 + 219 + 219
= 2596
Then
mean = [tex]\frac{2596}{12}[/tex] ≈ 216.3 ( to the nearest tenth )
The mean of the set of data is B) 216.3.
We will follow these steps:
- Add together all the numbers:
227 + 219 + 212 + 212 + 212 + 212 + 219 + 215 + 215 + 215 + 219 + 219 = 2596
- Find the number of data points:
There are 12 numbers in the set.
- Divide the sum by the number of data points to find the mean:
2596 / 12 = 216.3333...
- Round the mean to the nearest tenth:
216.3333... rounds to 216.3
Therefore, the mean of the set of data, when rounded to the nearest tenth, is 216.3. The correct choice is B) 216.3.
