Calculate the standard deviation, variance, and mean of a sample data set. Enter numbers separated by commas.
What is the difference between Sample and Population?
A **Population** includes all members of a specified group (e.g., all students in a school). A **Sample** is a subset of that population (e.g., 50 students from that school). In statistics, the formula to calculate variance is slightly different for a sample (dividing by n-1) versus a population (dividing by n) to provide a better estimate.
What does standard deviation tell me?
Standard deviation is a measure of how spread out the numbers in a data set are from the mean (average). A low standard deviation means the data points tend to be very close to the mean, while a high standard deviation indicates that the data points are spread out over a wider range of values.