V OCABULARY : Scatter plot It is a graph composed of points - - PowerPoint PPT Presentation

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V OCABULARY : Scatter plot It is a graph composed of points - - PowerPoint PPT Presentation

D AY 37 B EGINNER LINE OF THE BEST FIT I NTRODUCTION In this presentation, we are interested representing data for two variables (called binomial variables) whose relation may appear to be linear. Since our interest in a linear relation, we


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DAY 37 BEGINNER LINE OF THE

BEST FIT

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INTRODUCTION

In this presentation, we are interested representing data for two variables (called binomial variables) whose relation may appear to be linear. Since our interest in a linear relation, we seek to find the algebraic representation (an equation) for the data plotted.

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VOCABULARY:

Scatter plot It is a graph composed of points representing the relationship between data of two related variables Line of the best fit It is the line in a scatter plot that best represents the points plotted

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x 1 2 3 4 5 6 7 8 9 10 y 12 9 12 11 14 17 16 17 9 23

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Solution Upon drawing the line of the best fit, we have We then draw the line of the best fit and identify two points lying on it.

5 10 15 20 25 2 4 6 8 10 12

y x

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5 10 15 20 25 2 4 6 8 10 12

y x

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HOMEWORK

 Given the graph below, determine the slope-y

intercept form of the equation of the line of the best fit.

5 10 15 20 25 30 2 4 6 8 10 12 14 16

y x

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ANSWERS TO THE HOMEWORK

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THE END