A researcher has conducted a study and has obtained a data set. He is seeking your help and requests that you calculate the mean, range, median, and mode and distinguish which of these are measures of central tendency and which are measures of variability. Additionally, he has calculated the variance and standard deviation, and would also like you to classify these measures. He thanks you in advance for your help. The data set is as follows: 14, 10, 9, 16, 10, 15, 14, 16, 14, 11