Correlation

Question 1

Pearson’s product-moment correlation

Answer 1

Used to assess the strength of a linear relationship between two variables.

Two data sets into two lists (pretty sure)

Strong negative correlation: r = -1
No correlation: r = 0
Strong positive correlation: r = -1

Question 2

Spearman’s correlation rank coefficient

Answer 2

Used to assess the strength of a monotonic (linear or non-linear) relationship between two variables.

Rank numbers from 1-x, make sure sets match (ie top-rated book will match with the highest number for pages in each book)

Strong negative correlation: rₛ = -1
No correlation: rₛ = 0
Strong positive correlation: rₛ = -1