Question

You have found the following ages (in years) of 5 zebras. Those zebras were randomly selected from the 42 zebras at your local zoo: 8,11,17,7,19 Based on your sample, what is the average age of the zebras? What is the standard deviation? Round your answers to the nearest tenth.

Answer 1

The average age of the zebras is 12.4 years. The standard deviation is approximately 4.7 years.

Step-by-step explanation:

To calculate the average age of the zebras, you add up all the ages and divide by the number of zebras. In this case, the sum of the ages is 8 + 11 + 17 + 7 + 19 = 62. Then, divide 62 by 5 (the number of zebras) to get the average age of 12.4 years.

The standard deviation measures the spread of the data. To calculate the standard deviation, first find the mean of the ages. Then, subtract the mean from each age, square the result, sum the squared differences, divide by the number of zebras minus 1, and finally take the square root. In this case, the standard deviation is approximately 4.7 years.