Problem #1.

The times (in minutes) for carrying out blood test at WUPMC Lab for 30 tests are given below were studied in order to better understand the process. Apply the Descriptive Statistics:

a) Mean,

b)Median,

c)Mode,

d)Range,

e)Variance

f) Sample Standard Deviation

g) Explain the results.

Data: 15, 8, 12, 9, 15, 14, 11, 12, 18, 9, 17, 13, 12, 17, 10, 18, 13, 16, 9, 13, 17, 15, 10, 14, 12, 10, 14, 12, 13, 16

Problem #2.

A medical researchers wants to know if there is a linear relationship between toddler's age (months) and their height (cm). Data are shown below:

Age

12

13

15

18

20

24

Height

75

72

70

80

81

80

Help the medical researchers to draw a correct conclusion using the following statistical tools:

a) Pearson Product Moment Correlation Coefficient ( r )

b) Interpret the relationship of independent variable (Age) to dependent variable (Height).

c) Regression line (y = a + bx)

d) Explain the coefficient of determination ( r2 ) found in "a".