In: Statistics and Probability
Q38 Answer the following questions about variability of data sets: [4 Marks]
(a) What is the primary disadvantage of using the range to compare the variability of data sets?
(b) Describe the sample variance using words rather than a formula. Do the same with the population variance.
(c) Can the variance of a data set ever be negative? Explain.
(d) Can the variance ever be smaller than the standard deviation? Explain.
DO NOT WRITE THE ANSWERS - USE WORD FORMAT.
NO PLAGIARISM IN THE ANSWERS PLEASE - WILL SEND BACK QUESTION IF THERE IS.