Question

what is the Mean?
291 297 254 268 199 197 218 231 199 278 278. ​

Answer 1

You add all the numbers then divide by the amount of numbers. The answer is 246.3636

Answer 2

$\boxed{\sf Mean=\dfrac{Sum\:of\:terms}{No\:of\:terms}}$

$\\ \sf\longmapsto Mean=\dfrac{291+297+254+268+199+197+218+231+199+278+278}{11}$

$\\ \sf\longmapsto Mean=\dfrac{2710}{11}$

$\\ \sf\longmapsto Mean=246.3$