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Problem

You have found the following ages (in years) of 5 gorillas. The gorillas are randomly selected from the 29 gorillas at your local zoo:
space, 8, comma, space, 4, comma, space, 14, comma, space, 16, comma, space, 8
Based on your sample, what is the average age of the gorillas? What is the estimated variance of the ages?
You may round your answers to the nearest tenth.
Average age:
space
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i
years old
Variance:
space
  • Your answer should be
  • an integer, like 6
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4
  • an exact decimal, like 0, point, 75
  • a multiple of pi, like 12, space, p, i or 2, slash, 3, space, p, i
yearsstart superscript, 2, end superscript