a}Write the equation of the best-fit line. b) Identify the correlation coefficient. C) What fraction of variability in heights can be explained using the linear model of height vs wrist circumference? Coefficient of detckmination:

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10122
6.36 8.24 E-7
wrist
6.4379
Round answers to 4 decimal places.
a) Write the equation of the best-fit line.
b) Identify the correlation coefficient.
C) What fraction of variability in heights can be explained using the linear model of height vs wrist
circumference?
Coefficlent of detekminatlon:
d) Use the equation of the best-fit line to predict the height of a person with a wrist circumference of
6 inches.
Inches
e) One of the points on the scatterplot is (7.9,86.1). Calculate the residual for this point, hint: y y
inches
) The mean wrist circumference for this data is 6.91 inches, Predict the mean height for this data.
inches
g) When predicting heights, what is a "typical" error using this linear model?
Standard error of estimate.
inches
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Transcribed Image Text:10122 6.36 8.24 E-7 wrist 6.4379 Round answers to 4 decimal places. a) Write the equation of the best-fit line. b) Identify the correlation coefficient. C) What fraction of variability in heights can be explained using the linear model of height vs wrist circumference? Coefficlent of detekminatlon: d) Use the equation of the best-fit line to predict the height of a person with a wrist circumference of 6 inches. Inches e) One of the points on the scatterplot is (7.9,86.1). Calculate the residual for this point, hint: y y inches ) The mean wrist circumference for this data is 6.91 inches, Predict the mean height for this data. inches g) When predicting heights, what is a "typical" error using this linear model? Standard error of estimate. inches Question Help: Message Instructor Submit Ouestion esc 80 DII %23 %24 2 3 4 7 8 Q W tab R Y A S caps lock G shift N H control option command B
Body frame size is determined by a person's wrist circumference in relation to height. A researcher
measures the wrist circumference and height of a random sample of individuals. The data is
displayed below.
85
60
$585 6 65 A 75 § 85 9
Wrist Circumference (in) a
Excel Output:
Regression Statistics
Multiple R
0.7744
R Square
0.5997
Adjusted R
Square
0.5849
Standard Error
4.6571
Observations
29
Coefficients
Standard Error
t-Stat
P-value
(Intercept)
27.812
7.0482 3.946
0.00051
wrist
6.4379
1.0122
6.36
8.24 E-7
Round answers to 4 decimai places.
a) Write the equation of the best fit line.
esc
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Height (in)
Transcribed Image Text:Body frame size is determined by a person's wrist circumference in relation to height. A researcher measures the wrist circumference and height of a random sample of individuals. The data is displayed below. 85 60 $585 6 65 A 75 § 85 9 Wrist Circumference (in) a Excel Output: Regression Statistics Multiple R 0.7744 R Square 0.5997 Adjusted R Square 0.5849 Standard Error 4.6571 Observations 29 Coefficients Standard Error t-Stat P-value (Intercept) 27.812 7.0482 3.946 0.00051 wrist 6.4379 1.0122 6.36 8.24 E-7 Round answers to 4 decimai places. a) Write the equation of the best fit line. esc 9,0 F1 F4 DE %23 %24 3 4. 6 7 8 Q W tab T Y A S caps lock F つ shift C V M control option command リ Height (in)
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