Kiera is researching the relationship between social media usage and sleep. She wants to estimate how much nightly sleep amounts increase or decrease as social media usage increases. She takes a random sample of people and asks each of them how many hours they slept last night and how many hours they used social media that day.
What type of statical test used in this case?
A. Slope test
B. T-test
C. Chi-squared test
D. ANOVA test
