a doctor wants to determine whether there was a relation between age and and HDL

Question

a doctor wants to determine whether there was a relation between age and and HDL cholesterol Homework: Homework 4.1 HW Score: 72.42%, 14 13 of 20 (18 complete) Score: 0 of 1 pt E Question 4.1.32-T Adoctor wanted to determine whether there was a relation between age and HDL cholesterol He randomly selected 5 patients and Age HDL cholesterol 49 obtained the following data 38 (a) Draw a scatter diagram (b) Compute the linear correlation coefficient (c) Does a linear relation exist between age and HDL cholesterol? EH Click the icon to view the critical values table 44 Click to select your answer and then click Check Answer. 2

Explanation / Answer

a) For the scatterplot,

Option C is correct.

b) The statistical software output for linear correlation coefficient is:

Correlation between Age and HDL Cholesterol is:
-0.22728161

Hence,

Linear correlation coefficient = -0.227 (Rounded off to 3 decimal places)

c) Since this correlation coefficient does not lie in rejection region, we can not conclude that there is a linear relationship between age and cholesterol level. Hence, linear relationship between age and cholesterol level do not exist.

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