Question

Concept-Discussion 5 - The midpoint of the line segment joining the first quartile and third quartile of any distribution is the median.” Is this statement true or false? Explain your answer. Concept-Discussion 6 - If two variables are highly correlated, does this imply that changes in one cause changes in the other? If not, give at least one example from the real world that illustrates what else could cause a high correlation. Concept-Discussion 7 - Suppose you have data on student achievement in high school for each of many school districts. In spreadsheet format, the school district is in column A, and various student achievement measures are in columns B, C, and so on. If you find fairly low correlations (magnitudes from 0 to 0.4, say) between the variables in these achievement columns, what exactly does this mean? Concept-Discussion 8 - Suppose you have customer data on whether they have bought your product in a given time period, along with various demographics on the customers. Explain how you could use pivot tables to see which demographics are the primary drivers of their “yes/no” buying behavior.

Answer 1