Regression analysis of these data

Anonymous
timer Asked: Dec 3rd, 2015
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Question description

Kong et al. (2012) studied mutation rates in Icelandic children, specifically looking at mutations in single nucleotide polymorphisms (SNPs). As part of this study, they also recorded the age (in years) of the mother and the father. Part of their data are given below:

Father's Age

# of SNP Mutations

16

39

18

41

20

39

19

49

22

50

24

54

24

55

24

61

25

57

28

52

29

54

30

57

32

61

37

67

36

70

34

77

30

83

29

67

33

68

26

54

33

65

A)  If you were to do a regression analysis of these data, which would be the dependent variable and which would be the independent variable? Explain your reasoning!

B)  What is the regression equation for the relationship between these two variables? For this part, I want you to show me the steps you’d take to calculate the slope and the Y-intercept. You can check your results using Excel or some other program, but you will not get full credit if you simply give me the equation as generated by Excel or another program. (This is all a fancy way of saying you need to calculate this part by hand!).

C)  Determine whether the slope of this equation is significantly different from zero, using a regression ANOVA approach.


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University of Virginia

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