As a fitness fanatic, you installed a spin bike in your home and pedal away watching Squid Game. You have the idea of fitting a dynamo to the wheel to power your TV. You want to record the relationship between how fast you pedal and the brightness of the TV. What statistical technique could you use to analyse the data you collect?

a. ANOVA

b. t-test

c. z scores (to find an outlier, very slow or very fast pedaling)

d. Linear regression