Question

from unit 1, lesson 9 the value of coins in the pockets of several students is recorded. 10 20 35 35 35 40 45 45 50 60 what is the mean of the values? a 10 cents b 35 cents c 37.5 cents d 50 cents

Explanation:

Step1: Recall mean formula

The mean $\bar{x}=\frac{\sum_{i = 1}^{n}x_{i}}{n}$, where $x_{i}$ are data - points and $n$ is the number of data - points.

Step2: Identify data - points and $n$

The data - points are $10,20,35,35,35,40,45,45,50,60$, and $n = 10$.

Step3: Calculate the sum

$\sum_{i = 1}^{10}x_{i}=10 + 20+35+35+35+40+45+45+50+60=375$.

Step4: Calculate the mean

$\bar{x}=\frac{375}{10}=37.5$.

Answer:

C. 37.5 cents