In this exercise you will use the Correlation and Regression applet to make scatterplots with 10 points that have correlation close to 0.7. The lesson here is that many patterns can have the same...

Extracted text: In this exercise you will use the Correlation and Regression applet to make scatterplots with 10 points that have correlation close to 0.7. The lesson here is that many patterns can have the same correlation. Always plot your data before you trust a correlation. (a) Stop after adding the first two points. What is the value of the correlation? (Enter your answer rounded to four decimal places). Why does the correlation have this value? Two is less than the minimum number of data points needed to calculate correlation. This value is the default correlation. Because two points determine a line, the correlation always has this value. The mean of two points always has this value.