Learn to read graphs, tables, and identify relationships between variables.
In a scatter plot, what does a cluster of points moving upward to the right suggest?
Points trending upward indicate that as one variable increases, so does the other (positive correlation).
What is the independent variable typically placed on?
The independent variable (manipulated or controlled) is on the x-axis; dependent variable (measured) is on y-axis.
If Study A had 50 participants and Study B had 200, which is more reliable?
Generally, larger sample sizes reduce random error and increase reliability, all else being equal.
What does a flat line on a distance-time graph indicate?
If distance doesn't change over time (flat line), the object is stationary.
In an experiment testing fertilizer, the group with no fertilizer is called:
The control group provides a baseline to compare against groups that receive the experimental treatment.