Regression: Finding the equation of the line of best fit

Example 1: Find an equation for the line of best fit, make the corresponding predictions, explain what the slope represents, and explain what the y-intercept represents. a) Year Cost of Stamp 1958 0.04 1963 0.05 1968 0.06 1971 0.08 1974 0.10 1975 0.13 1978 0.15 … ................
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