[tex]This\ is\ the\ formula\ on\ getting\ the\ mean... \\ \\ \boxed{mean= \frac{\sum x}{N}} \\ \\ \\ Solution: \\ \\ mean= \frac{\sum x}{N} \\ \\ mean= \frac{12+12+8+8}{N} \\ \\ mean= \frac{24+16}{N} \\ \\ mean= \frac{40}{N} \\ \\ There\ are\ 4\ given\ numbers,\ therefore,\ N\to4 \\ \\ mean= \frac{40}{4} \\ \\ \boxed{\boxed{mean=10}} \\ \\ \\ Hope\ it\ Helps:) \\ Domini [/tex]
