M - Statistics & Mechanics 1 - 4) Correlation

Question 1

Definition of bivariate data

Answer 1

Data which has pairs of values for two variables

Question 2

Axes that represent different variables and what they mean

Answer 2

• x-axis → independent → controlled
• y-axis → dependent → measured

Question 3

Possible correlation types

Answer 3

• Strong positive
• Weak positive
• Strong negative
• Weak negative
• No correlation

Question 4

Meanings of the parts of a regression line equation

Answer 4

• y = bx + a
• b → for every 1 more ‘x’ there’s ‘b’ more ‘y’s
• a → value of ‘y’ when ‘x’ is 0