Question

each of 8 students reported the number of movies they saw in the past year. here is what they reported. 12, 6, 19, 16, 9, 11, 15, 15. find the mean number of movies that the students saw. if necessary, round your answer to the nearest tenth.

Explanation:

Step1: Calculate sum of data

$12 + 6+19 + 16+9 + 11+15 + 15=103$

Step2: Divide by number of data - points

The number of students (data - points) is $n = 8$. The mean $\bar{x}=\frac{103}{8}=12.875$

Step3: Round to nearest tenth

Rounding $12.875$ to the nearest tenth gives $12.9$

Answer:

$12.9$