Traffic ebbs and flows with holidays, paydays, and even the weather. Can you spot the best ways to keep those fluctuations from skewing your tests?
Launching a one‑week test only on Black Friday risks biased results due to ______ demand spikes.
pixel
server
seasonal
DNS
VWO’s 2025 playbook suggests avoiding tests during major ______ when typical user behaviour changes dramatically.
code freezes
holidays
browser updates
API refactors
A simple technique to balance weekday vs. weekend effects is to run the test for full ______ cycles.
minute
weekly
hourly
quarterly
If traffic shows predictable monthly peaks, analysts often include a ______ variable in their regression model.
memory leak
pixel ratio
seasonal dummy
binary search
Extending a test through multiple pay‑day cycles helps control for seasonality tied to ______ frequency.
DNS TTL
salary
JPEG refresh
SSL handshake
Which visualisation quickly shows whether control and variant have parallel trends before launch?
favicon sprite
pre‑test time‑series plot
sankey diagram
edge location map
Failing to equalise mobile vs desktop share between arms may hide a seasonal surge from a new ______ release.
router
smartphone
SQL driver
GPU
A split‑traffic experiment that re‑randomises visitors daily risks mis‑measuring long buying cycles known as ______ effects.
carry‑over
cookie‑sync
viewport
gzip
Statisticians often apply Fourier or Prophet models to ______ raw metrics before analysing lift.
minify
compress
encrypt
deseasonalize
According to 2025 CRO guides, minimum recommended duration for most site‑wide tests is ______ weeks to average out short‑term seasonal noise.
thirteen
four
one‑half
fifty‑two
Starter
You’re new to controlling for seasonality. Revisit the fundamentals and try running a few simple tests to build confidence.
Solid
Solid grasp of controlling for seasonality concepts—refine the details with more hands‑on practice.
Expert!
Expert level! You can design, run, and interpret advanced controlling for seasonality experiments like a pro.
