Lesson Overview
Help candidates interpret statistical output quickly and avoid overfitting their answer to one number.
Level I questions are three-choice multiple choice and are built to reward fast recognition of the relevant rule, relationship, or calculation path. For this lesson, the job is to turn the topic into a repeatable exam move rather than another note to reread.
Mental Model
A regression dashboard highlights coefficient, t-stat, p-value, R-squared, and residual pattern one at a time.
In the Above MPS system, this sits in Quant + Econ Tools: Hit the threshold. Use that shape as the memory hook, then connect it to the precise facts in the question stem.
Exam Playbook
- Name the topic before calculating. Decide whether the stem is asking for a definition, direction of effect, classification, or numerical result.
- Apply the rule that changes the answer. Ignore details that do not affect the relationship being tested.
- Check the answer against the common trap. If the tempting choice matches one of the traps below, slow down before locking it in.
High-Yield Map
- State the null and alternative before looking at the p-value.
- Statistical significance is not economic significance.
- Regression output is a story about slope, fit, and reliability.
Common Traps
- Rejecting the null because the coefficient looks large.
- Ignoring sign and units.
- Confusing correlation with causation.
Repair Drills
- Read five regression outputs and identify the tested claim before calculating anything.
- Write a one-sentence interpretation for each coefficient.