Week 5

Question 0

Positive variable relationship

Answer 0

As 1 variable goes up so does the other

Question 1

Correlation

Answer 1

Relationship btwn two variables. Use scatter plot

Best with interval, ratio measures

Question 2

Negative variable relationship

Answer 2

1 variable goes up and one goes down

Question 3

Co variance

Answer 3

Wether 2 variables vary together

Question 4

Pearsons r value

Answer 4

Strength of relationship btwn 2 variables -1 to +1 (strength based on number not -/+)
Closer to 1 the stronger it is. 1=positive 0=no relationship -1=neg relationship
Mod/med, strong or weak correlation.

Question 5

r=.52 vs r=.78

Answer 5

Strongest is .78

r=-.52 is a string negative relationship

Question 6

Correlation caution

Answer 6

Could be other underlying factors.

Not always causal