HW Score: 48.44%, 7.7 4.1.32-T A doctor wanted to determine whether there was a
ID: 3072786 • Letter: H
Question
HW Score: 48.44%, 7.7 4.1.32-T A doctor wanted to determine whether there was a relation between age and HDL cholesterol. He randomly selected 5 patients and obtained the following data (a) Draw a scatter diagram (b) Compute the linear correlation coefficient. (c) Does a linear relation exist between age and HDL cholesterol? 28 38 27 38 49 57 EB Click the icon to view the critical values table. (a) Draw a scatter diagram of the data. Treat age as the explanatory variable. Which of the O A. . O c. O D. 25 HOL Click to select your answer and then click Check Answer. Cleer Al remaining Show Al data-922,2018-72xisx data-9,23,2018-11 .xax MacBook AirExplanation / Answer
Ans:
a)Scatter plot option B is correct.
b)
Correlation cofficient,r=(5*8980-196*229)/sqrt((5*7954-196^2)*(5*11019-229^2))=0.008
c)As,r is nearly zero,so there does not exist linear relation between age and HDL.
Age(x) HDL(y) xy x^2 y^2 1 44 28 1232 1936 784 2 38 44 1672 1444 1936 3 27 45 1215 729 2025 4 38 57 2166 1444 3249 5 49 55 2695 2401 3025 Total= 196 229 8980 7954 11019Related Questions
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