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REMEMBER! Type data tables in STAT EDIT. Use 4:LinReg(ax+b) for line of best fit Use 5:QuadReg for curve or quadratic of best fit Determine the quadratic curve of best fit for the data.
{(-5, 8.1), (-2, -3.6), (-4, -15), (0, 5.1), (1, 9.3), (-3, -8.2)} y = 1.66x2 +8.34x +7.5 y = 1.66x2 +8.34x +8.22 y = 1.66x2 +8.34x +3.14 y = 1.66x2 +8.34x +2.12 Using your quadratic curve of best fit, estimate the value of y when x = 3
{(-5, 8.1), (-2, -3.6), (-4, -15), (0, 5.1), (1, 9.3), (-3, -8.2)} 42 39 36 32 What is the equation for the line of best fit? Benny is doing a Social Studies project investigating trends over time. He researched the price of eggs over time. y = .056x - 110.29 y = .056x - 112.35 y = .056x - 115.13 y = .056x - 118.21 Based on your line of best fit, what will be the price of a dozen eggs in 2015? Benny is doing a Social Studies project investigating trends over time. He researched the price of eggs over time. $2.42 $2.55 $2.15 $2.31 Determine the quadratic curve of best fit for the data. y = -0.211x2 + 849.6x - 767522 y = -0.211x2 + 849.6x - 345199 y = -0.211x2 + 849.6x - 854652 y = -0.211x2 + 849.6x - 982330 Using the quadratic curve of best fit, which equation most closely represents the set of data?
{(-8, 80.4), (-7, 57.8), (-6, 38.6), (-5, 22.8), (3, 18.8), (5, 51.8), (7, 98.4)} y = x2 + 2x - 5 y = x2 - 3x + 5.2 y = 1.7x2 - 3x + 5 y = 1.7x2 + 2.9x - 5.2 |