Bivariate Data Analysis

Question 1

Strength of Association (Pearson’s Correlation Co-efficient)

Perfect positive

Answer 1

r=1

Question 2

Strength of Association (Pearson’s Correlation Co-efficient)

Strong positive

Answer 2

r= 0.75 to 0.99

Question 3

Strength of Association (Pearson’s Correlation Co-efficient)

Moderate positive

Answer 3

r= 0.5 to 0.74

Question 4

Strength of Association (Pearson’s Correlation Co-efficient)

Weak positive

Answer 4

r= 0.25 to 0.49

Question 5

Strength of Association (Pearson’s Correlation Co-efficient)

No linear association

Answer 5

r= -0.24 to 0.24

Question 6

Strength of Association (Pearson’s Correlation Co-efficient)

Weak negative

Answer 6

r= -0.25 to -0.49

Question 7

Strength of Association (Pearson’s Correlation Co-efficient)

Moderate negative

Answer 7

r= -0.5 to -0.74

Question 8

Strength of Association (Pearson’s Correlation Co-efficient)

Strong negative

Answer 8

r= -0.75 to -0.99

Question 9

Strength of Association (Pearson’s Correlation Co-efficient)

Perfect negative

Answer 9

r= -1

Question 10

Equation of line of best fit

Answer 10

y=Bx+A

Question 11

M (B)

Answer 11

r x sy/sx

standard deviation of x and y

Question 12

y-intercept (C)

Answer 12

y - m x x

mean of x and y