. For the data below, complete the following Age 34 43 49 51 65 Bone Density 946
ID: 3206256 • Letter: #
Question
. For the data below, complete the following
Age
34
43
49
51
65
Bone Density
946
875
804
723
691
a. Draw a scatter plot
b. Estimate the correlation in words (positive, negative, or none)
c. Explain your estimation
d. Calculate the correlation coefficient
e. Explain what the correlation coefficient tells about the data
f. Calculate the coefficient of determination
g. Explain what the coefficient of determination tells about the data
h. Calculate the least-squares regression line
i. Predict the bone density at age 56
Age
34
43
49
51
65
Bone Density
946
875
804
723
691
Explanation / Answer
a) Scatter Plot
b) from above scatter plot we conclude that there is negative correltion between x and y
c) Since ngative correlation between Age and Bone density, if we increase the age the bone density will be decreased.
d)Correltaion coefficient
From Excel
Correlation coefficient = -0.94
Age Bone Density Age 1 Bone Density -0.93962 1Related Questions
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