Managerial Statistics; Fit a regression line and find the Glucose level when the age is 70

  1. From the following information:

Age

53

51

55

42

47

49

55

38

30

Glucose Level

79

75

69

55

97

61

86

41

20

  1. Fit a regression line and find the Glucose level when the age is 70

  2. Find the value of the Karl Pearson’s correlation coefficient and comment on the result.

 

 

  1. The local ice cream shop keeps track of how much ice cream they sell and the temperature on that day, here are their figures for the last 12 days:

Temperature °C

24°

16°

21°

25°

28°

22°

19°

25°

23°

18°

22°

17°

Ice Cream Sales

25

15

25

35

16

12

22

24

14

31

30

08

Find Spearman Rank correlation from the above information and comment on the correlation between temperature and ice-cream sales.

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