CEC Conversion Rate Optimization 3 — Questions and Answers
Question 1: In CRO, what does 'statistical significance' indicate in an A/B test?
- The test ran for at least 30 days
- The probability that the observed difference between variants is not due to random chance (Correct answer)
- The revenue difference between control and variant
- The sample size used in the test
Correct answer: The probability that the observed difference between variants is not due to random chance
Statistical significance (often expressed as p-value < 0.05 or 95% confidence) tells you the likelihood that the result reflects a true difference rather than random variation.
Question 2: Which of the following is an example of social proof used in ecommerce CRO?
- A countdown timer on a product page
- Displaying the number of customers currently viewing an item (Correct answer)
- A free shipping threshold banner
- A breadcrumb navigation element
Correct answer: Displaying the number of customers currently viewing an item
Showing real-time viewer counts leverages social proof by signaling demand and popularity, which reduces purchase uncertainty and nudges conversions.
Question 3: What CRO principle does 'Fitts's Law' inform in UI design?
- Page load speed should be under 3 seconds
- Larger and closer targets are easier and faster to click, so CTAs should be prominent (Correct answer)
- Users read in an F-pattern
- White space improves readability
Correct answer: Larger and closer targets are easier and faster to click, so CTAs should be prominent
Fitts's Law states that the time to reach a target is a function of distance and size; CRO applies this by making primary CTAs large and easy to reach.
Question 4: A product page with 47 customer reviews averages 4.1 stars but still has a low add-to-cart rate. Which CRO element should be tested FIRST?
- Remove all reviews to reduce distraction
- Test the product images, description clarity, and CTA button placement (Correct answer)
- Add more reviews artificially
- Change the star rating display to a percentage
Correct answer: Test the product images, description clarity, and CTA button placement
When trust signals are adequate, low add-to-cart rates typically stem from weak product imagery, unclear value proposition, or a CTA that isn't prominent enough.
Question 5: What is 'anchor pricing' and how does it influence conversion?
- Fixing prices permanently to avoid confusion
- Displaying a higher original price next to the sale price to make the discounted price feel like a better deal (Correct answer)
- Pricing all products at a round number ending in zero
- Showing competitor prices on your product pages
Correct answer: Displaying a higher original price next to the sale price to make the discounted price feel like a better deal
Anchor pricing uses a higher reference price (crossed-out MSRP) to make the actual price appear more attractive, leveraging the anchoring cognitive bias to boost conversions.
Question 6: Which checkout optimization tactic directly reduces payment friction for returning customers?
- Requiring re-entry of all billing information every visit
- Offering saved payment methods and one-click checkout (Correct answer)
- Adding more upsells between cart and order confirmation
- Requiring phone number verification before payment
Correct answer: Offering saved payment methods and one-click checkout
Saved payment information and one-click checkout eliminate repetitive data entry, reducing friction and cart abandonment for returning shoppers.
Question 7: What does 'progressive disclosure' mean in ecommerce UX and CRO?
- Revealing all product information at once to avoid user frustration
- Showing only essential information first and revealing more detail as users engage, reducing cognitive overload (Correct answer)
- Disclosing privacy policies at checkout
- Progressively lowering prices during a sale event
Correct answer: Showing only essential information first and revealing more detail as users engage, reducing cognitive overload
Progressive disclosure reduces cognitive load by presenting only the most critical information initially and layering in additional details as the user demonstrates interest.
CEC Conversion Rate Optimization 3
In CRO, what does 'statistical significance' indicate in an A/B test?