Acquisition Lesson Planning Form - Ciclt.net

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A linear regression line is astraight line thatapproximates the relationshipbetween two variablesrepresented by a set of data●●●●Find the linear regression lineby calculating the slope⎛ y2− y1⎞⎜m=⎟ and using the⎝ x2− x1⎠slope-intercept formy = mx + b of an equation of a( )line. Check with the linearregression on the graphingcalculator.1. Plot the following points on the grid below:(1, 3), (2, 2), (0, 1), (3,4)By eyeballing:Linear Regression Line: y = _____ x + ____Using the graphing calculator:Linear Regression Line: y = _____ x + ____2. Plot the following points on the grid below:(-4, 2), (1, -2), (-3, -1), (-1, 1)By eyeballing:Linear Regression Line: y = _____ x + ____Using the graphing calculator:Linear Regression Line: y = _____ x + ____Math 2 Unit 5 <strong>Lesson</strong> 3 Linear and Quadratic Regression Page 4
GO #3: How do we find the median-median line from a set ofdata?1 st Divide the points into 3 equal groups.We would have 4 points in each grouphere. If there were 1 extra point, itwould go in the center section. If therewere 2 extra points, 1 would be in eachof the two outside sections.x y1 21 02 22 13 54 25 36 26 77 98 58 8(7.5, 7.5)(4.5, 2.5)2 nd Find the median x-coordinate and the median y-coordinate in each group of points. This point mayor may not be on your graph. For example, in theleft section, the median x-coordinate is 1.5 and themedian y-coordinate is 1.5, so the point you find is(1.5, 1.5) and is marked by a .Math 2 Unit 5 <strong>Lesson</strong> 3 Linear and Quadratic Regression Page 5
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Acquisition Lesson Planning Form - Ciclt.net

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