What is the variance of the dataset 4, 5, 7, 8, 9, 10?
+
What is the standard deviation of the set: {4, 7, 9, 11, 15}?
+
What is the average temperature (in degrees Fahrenheit) of a city over a span of 10 days if the daily temperatures were 78, 85, 82, 79, 81, 76, 83, 80, 84, and 77?