### Home > MC1 > Chapter 1 > Lesson 1.3.3 > Problem1-123

1-123.

Calculate the mean of each data set below. Can you find any shortcuts that allow you to find the mean without having to do much calculation?

The mean is the sum of all the values divided by the number of values.

1. $6$, $10$, $6$, $10$

$\text{Mean}=\frac{6+10+6+10}{4}$

What is the mean of $6$ and $10$? Is it different from the mean of $6$, $10$, $6$, and $10$?

$8$

2. $11$, $12$, $12$, $13$, $12$

What is the mean of $11$ and $13$? How does this help you find the mean more quickly?

3. $0$, $5$, $4$, $8$, $0$, $7$

$\frac{0+5+4+8+0+7}{6}$

$\frac{9+15}{6}$

$\frac{24}{6}$

$4$