Hypothesis Testing for Correlation (AQA A-Level Mathematics): Flashcards

$\rho$ (rho)

$r$

$H_0: \rho = 0$ (no correlation)

$H_1: \rho > 0$

$H_1: \rho \neq 0$

Use statistical calculator in linear regression mode ($y = a + bx$)

When $|r|$ exceeds critical value from table

Sufficient evidence populations are correlated

Insufficient evidence populations are correlated

Sample size ($n$) and significance level