Circumference of a Circle: C = 2 π r : The formula for the circumference of a circle can be written as a function of C in terms of r: C(r) = 2πr.(a) Set up a table of values for r = 1 through 6 and draw a scatterplot of the data. (b) Is the association positive or negative? Why? (c) What can you say about the strength of the correlation? (d) Sketch a line that “approximates” the data. What can you say about the slope of this line?
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