Question: 1. How is Chebychev's rule used in describing data spread? 2. When dealing with quantitative data, one of the important measures of variation/spread is standard

1. How is Chebychev's rule used in describing data spread?

2. When dealing with quantitative data, one of the important measures of variation/spread is standard deviation. Can standard deviation be negative? Why or why not?

3. If there is a data set recording the a group of 20 individuals age and the mean age is 25 then why can't we infer that most individuals in the group are 25? Does that mean descriptive statistics have to be considered a different category from inferential statistics even though they are analyzing the same data?

4. What is the difference between the arithmetic mean and the geometric mean? When it is appropriate to use each as a statistical measure of location in describing and summarizing observations (data)?

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