NCCER Research Methods & Evidence-Based Practice 2 — Questions and Answers
Question 1: When a homeowner asks you to use a specific product you've never worked with, what is the best first step?
- Start the job and learn as you go
- Review the manufacturer's technical data sheet before starting (Correct answer)
- Refuse the job entirely
- Ask a neighbor if they've used it
Correct answer: Review the manufacturer's technical data sheet before starting
Manufacturer technical data sheets provide critical application, safety, and performance information needed before using an unfamiliar product.
Question 2: Which organization publishes the National Electrical Code (NEC) used as the primary reference for residential electrical standards?
- OSHA
- ANSI
- NFPA (Correct answer)
- ICC
Correct answer: NFPA
The National Fire Protection Association (NFPA) publishes the NEC (NFPA 70), which is the standard for electrical installations.
Question 3: A handyman notices that a repair technique he learned 10 years ago is now contradicted by current NCCER curriculum. He should:
- Continue using the old technique since it has worked before
- Update his practice to follow current evidence-based standards (Correct answer)
- Wait for a customer complaint before changing methods
- Only update if required by law
Correct answer: Update his practice to follow current evidence-based standards
Evidence-based practice requires updating methods when current authoritative sources supersede older techniques.
Question 4: What does the term 'load-bearing' mean in the context of construction research and planning?
- A wall that bears the weight of a load center breaker panel
- A structural element that supports the weight of the structure above it (Correct answer)
- Any wall that is thicker than 4 inches
- A wall that faces the exterior of the building
Correct answer: A structural element that supports the weight of the structure above it
Load-bearing elements transfer structural loads from upper floors or roof to the foundation and cannot be removed without structural consequence.
Question 5: Which type of source is considered most authoritative when researching proper fastener selection for a deck project?
- A home improvement blog post
- A YouTube tutorial
- The IRC (International Residential Code) and fastener manufacturer specs (Correct answer)
- Customer reviews on a retail website
Correct answer: The IRC (International Residential Code) and fastener manufacturer specs
The IRC sets minimum code requirements and manufacturer specifications provide tested performance data — both are authoritative primary sources.
Question 6: When documenting a completed repair for a client's records, which information is MOST important to include?
- The handyman's personal opinions about the repair
- Materials used, methods applied, date of work, and any warranties (Correct answer)
- The names of other contractors in the area
- Only the total cost of the repair
Correct answer: Materials used, methods applied, date of work, and any warranties
Thorough documentation of materials, methods, date, and warranties creates an accurate service record that supports future maintenance decisions.
Question 7: What is a 'pilot test' in the context of applying a new repair technique on a job site?
- Testing a new power tool before buying it
- Applying a technique on a small, inconspicuous area before full application (Correct answer)
- Flying a drone to inspect the roof
- Running the electrical circuit before final inspection
Correct answer: Applying a technique on a small, inconspicuous area before full application
A pilot test on a small area verifies compatibility and appearance before committing to a full application, reducing the risk of costly errors.
NCCER Research Methods & Evidence-Based Practice 2
When a homeowner asks you to use a specific product you've never worked with, what is the best first step?