Mathematics, 13.10.2020 15:01 diggy72
Someone Help me ive been stuck for an hour 40 points for whoever answers + more points for person with the brainliest answer
Part One: Measurements
1.Measure 11 people in arm span and height in inches i measured mines here
Arm Span (inches) Height (inches)
58 60
49 47
51 55
19 25
37 39
44 45
47 49
36 35
41 40
46 50
58 61
Part Two:Representing Data With Plot
1. Using graphing software of your choice, create a scatter plot of your data. Predict the line of best fit and sketch it on your graph.
2. I already created the data does anyone know how to make a scatter plot out of my data? if so please make one
Part 3:The Line Of Best Fit
1.Which variable did you plot on the x-axis and which variable did you plot on the y-axis? Explain why you assigned the variables in that way
2.Write the equation of the line of best fit using the slope-intercept formula y = mx + b. Show all your work, including the points used to determine the slope and how the equation was determined.
A)Pick any two point on your line of best fit. Write the coordinates of your two points below: Point 1 ( , ) Point 2 ( , )
B)Using the two point above find the slope using the formula m= (y_2- y_1)/(x_2-x_1 )
C)Plug in your slope and one of the two points above into point-slope form y-y_1=m(x-x_1)
D)Change above equation into slope-intercept form y = mx + b. 3)
3. What does the slope of the line represent within the context of your graph? What does the
y-intercept represent?
4)Test the residuals of two other points to determine how well the line of best fit models the data.
Arm Span Height Height from equation Residual (Actual height-Height from equation)
5)Use the line of best fit to help you to describe the data correlation
6)Using the line of best fit that you found in Part 3, Question 2, approximate how tall is a person whose arm span is 66 inches:
7)According to your line of best fit, what is the arm span of a 74-inch-tall person:
Answers: 3
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Someone Help me ive been stuck for an hour 40 points for whoever answers + more points for person wi...
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