What is the variance of the following data? If necessary, round your answer to two decimal places. 12, 13, 8, 13, 9, 11, 12, 9, 11

Question

anonymous · Answer

ick

anonymous · Answer

you need a calculator anyway, so you might as well cheat, unless of course you have to do this on a test, but the calculation is a pain http://www.wolframalpha.com/input/?i=variance+12%2C+13%2C+8%2C+13%2C+9%2C+11%2C+12%2C+9%2C+11

anonymous · Answer

result is 31.11

anonymous · Answer

anonymous · Answer

none of those answers are given, i have these to choose from: 
		
2.99
		
3.00
		
3.01
		
3.02