Arm Length (cm) Height (cm) 31 170 21 165 24 170 23 160 23 2 157 48 24 5 160 02 28 170 18 24 13 158 75 26 5 184 28 175 22 86 170 18 22 86 152 21 152 4 25 4 180 27 93 181 2 22 9 165 1 25 4 175 26 30 48 172 7 19 172 72 27 3 161 3 26 8 188 25 167 24 638 162 56 26 67 167 64 Module 2 Project Part B Examining the Relationship Between Arm Length and Height This activity uses arm length and height data collected from your class to determine a linear model You will create a scatter diagram, find a regression equation, and then use the equation to make predictions Enter the data provided into lists in StatCrunch Work on a scatter diagram of the paired data and record ithere Type Copy your answer here From the scatter diagram, does there appear to be a relationship between forearm length andheight Type Copy your answer here If so, describe the relationship Does it appear to be linear Does it appear strong or weak Does there appear to be a positive or negative association between the two variables Type Copy your answer here Find the value of the linear correlation coefficient for this data and provide aninterpretation Type Copy your answer here Find the least squares regression line that relates forearm length and height State the equation and graph the line on the scatter diagram Type Copy your answer here Explain what the intercept of the regression line means in thiscontext Type Copy your answer here Explain what the slope of the regression line means in thiscontext Type Copy your answer here Calculate the following Use the regression equation to find your predicted height for your forearm length Type Copy your answer here Calculate the difference between your actual height and the height predicted by the regression equation Type Copy your answer here What is this differencecalled Type Copy your answer here Use the regression equation to predict the height of someone with a 6 inch long forearm Is your value reasonable Explain why or whynot Type Copy your answer here

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Arm Length (cm) Height (cm) 31 170 21 165 24 170 23 160 23.2 157.48 24.5 160.02 28 170.18 24.13 158.75 26.5 184 28 175

Arm Length (cm)	Height (cm)
31	170
21	165
24	170
23	160
23.2	157.48
24.5	160.02
28	170.18
24.13	158.75
26.5	184
28	175
22.86	170.18
22.86	152
21	152.4
25.4	180
27.93	181.2
22.9	165.1
25.4	175.26
30.48	172.7
19	172.72
27.3	161.3
26.8	188
25	167
24.638	162.56
26.67	167.64

Module 2 Project Part B

Examining the Relationship Between Arm Length and Height

This activity uses arm length and height data collected from your class to determine a linear model. You will create a scatter diagram, find a regression equation, and then use the equation to make predictions.

Enter the data provided into lists in StatCrunch.
Work on a scatter diagram of the paired data and record ithere.

Type/Copy your answer here

From the scatter diagram, does there appear to be a relationship between forearm length andheight?

Type/Copy your answer here

If so, describe the relationship. Does it appear to be linear? Does it appear strong or weak? Does there appear to be a positive or negative association between the two variables?

Type/Copy your answer here