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Sample and population standard deviation

You have found the following ages (in years) of 66 lizards. Those lizards were randomly selected from the 3636 lizards at your local zoo:
1,2,2,1,3,3\qquad1,\enspace 2,\enspace 2,\enspace 1,\enspace 3,\enspace 3
Based on your sample, what is the average age of the lizards? What is the standard deviation? Round your answers to the nearest tenth.
Average age:
  • Your answer should be
  • an integer, like 66
  • a simplified proper fraction, like 3/53/5
  • a simplified improper fraction, like 7/47/4
  • a mixed number, like 1 3/41\ 3/4
  • an exact decimal, like 0.750.75
  • a multiple of pi, like 12 pi12\ \text{pi} or 2/3 pi2/3\ \text{pi}
years old
Standard deviation:
  • Your answer should be
  • an integer, like 66
  • a simplified proper fraction, like 3/53/5
  • a simplified improper fraction, like 7/47/4
  • a mixed number, like 1 3/41\ 3/4
  • an exact decimal, like 0.750.75
  • a multiple of pi, like 12 pi12\ \text{pi} or 2/3 pi2/3\ \text{pi}
years