Using the formulas below and the information from the previous questions (shown again in the table below), what are the slope and y-intercept of the least squares regression line for this data?PointRef. Method (x)Test Method (y)x-y-(x-)(y-)(x-)21 3 6 -17-17.8 302.6 2892 14 18 -6 -5.8 34.8 363 31 34 11 10.2112.2 121 4 5 6 -15 -17.8267 255 5 24 29 4 5.220.8 166 16 21 -4 -2.811.2 167 32 39 1

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Using the formulas below and the information from the previous questions (shown again in the table below), what are the slope and y-intercept of the least squares regression line for this data?


PointRef. Method (x)Test Method (y)x-y-(x-)(y-)(x-)2
1 3 6 -17-17.8 302.6 289
2 14 18 -6 -5.8 34.8 36
3 31 34 11 10.2112.2 121
4 5 6 -15 -17.8267 255
5 24 29 4 5.220.8 16
6 16 21 -4 -2.811.2 16
7 32 39 12 15.2182.4 144
8 10 11 -10-12.8 128 100
9 40 42 20 18.2364 400
10 6 5 -14 -18.8263.2 196
11 18 21 -2 -2.85.6 4
12 29 34 9 10.2 91.881
13 10 16 -10 -7.8 78 100
14 43 48 23 24.2556.6 529
15 19 27 -1 3.2 -3.21
Total 2415 2258

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