A manufacturer produces rods. Each day he notes the number of rods made and the cost, in dollars, of making one rod.
(a)[2]
Complete the scatter diagram. The first five points are already plotted for you.
(b)[1]
Draw the best-fit line.
(c)[1]
What correlation does the scatter diagram show?
(d)[1]
For 400 rods made, estimate the cost of each rod using your line of best fit.
(e)[1]
Estimate how many rods were made.
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