Test your understanding of post‑exposure grace periods and their impact on lift measurement accuracy.
Grace period in lift tests allows time for ______ to complete before measuring conversions.
viewability check
ad rendering
click-to-conversion lag
cookie drop
Typical grace period for e‑commerce lift tests is ______ days post campaign.
14
0
30
1‑3
If grace period is too short, lift may be underestimated due to ______ conversions being missed.
delayed
refund
duplicate
organic
Overly long grace periods risk contamination from ______ marketing.
new overlapping
cookie
bot
seasonal
Meta’s 2025 Private Lift defaults grace period equal to 90 % percentile of historical ______ lag.
CPC
click-to-convert
CPM
impression
Grace period is applied after exposure window closes and before the ______ window begins.
creative
budget
impression
observation
For app installs, grace period may match the app store’s conversion window of ______ hours.
1
168
24
720
Statistical power is unaffected by grace length if total observation window remains ______.
dynamic
short
fixed
random
Grace periods do not apply to ‘view‑through’ conversion windows which are handled by ______ rules.
random
cookie sync
last click
separate attribution
Documenting grace logic in test design is critical for ______ reproducibility.
methodological
DNS
creative
pixel
Starter
Review the basics.
Solid
Nice work—refine the details.
Expert!
Exceptional command of the topic.
Preparing for Grace Period in Lift Tests Interview Questions means getting comfortable with how time windows affect your experimental results. Start by exploring our attribution and marketing mix modelling interview questions to see how lift tests fit into your overall strategy. After that, test yourself with the search brand versus generic split practice MCQs and sharpen your forecast skills using the MMM scenario planning interview resource. Finish strong by diving into the media quality weights interview questions to balance channel influence and timing.
