DA0-002 Data Analysis Practice Question
In time series decomposition, a pattern that repeats at regular intervals (e.g., weekly, yearly) is called:
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Seasonality
Seasonality refers to regular, periodic patterns in time series data.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Cyclical
Why it's wrong here
Cyclical patterns are irregular and not fixed period.
- ✗
Irregular
Why it's wrong here
Irregular components are random noise.
- ✗
Trend
Why it's wrong here
Trend is long-term direction.
- ✓
Seasonality
Why this is correct
Seasonality has fixed and known periods.
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