You are to gather the data about a variable of your choice. But the data set should have at least 20 data in it. 1. Briefly explain what your variable is and how you collect the data. 2. Compute the sample mean and the sample standard deviation. Explain how you calculate them. 3. What percentage of the data fall within the mean plus or minus two times the standard deviation? 4. Discuss your findings with regard to Key Fact 3.2 and the accompanying paragraphs in the text book. Can some please help me understand this discussion question?