Question: how to calculate sample mean in python?
Answer: To calculate the mean of a data set, divide the sum of all values by the number of values. Consider the following set of numbers: {5,2,2,7}. The mean is (5 + 2 + 2 + 7) / 4 = 16 / 4 = 4. We use the symbol “x-bar” to represent the mean of a sample data.