The answer is that the timechart command requires a _time field which is not present after stats. This is correct because the `stats` command, by default, discards the internal `_time` field from the result set, and `timechart` relies entirely on a valid `_time` field to create its time-based buckets and generate the x-axis. Without it, the search engine cannot determine how to group events over time, producing an error. On the Splunk Core Certified Power User SPLK-1003 exam, this scenario tests your understanding of command ordering and data flow in the search pipeline—a common trap is to chain `stats` directly into `timechart` without first using `bin` or `timechart` itself to preserve temporal context. A helpful memory tip is to remember that `stats` strips time, so always place `timechart` before any command that aggregates without time, or use `bin _time` to keep the field alive.
SPLK-1003 Advanced Searching and Statistics Practice Question
This SPLK-1003 practice question tests your understanding of advanced searching and statistics. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
index=web sourcetype=access_combined
| stats count by status, uri_path
| eval status_group=case(status>=500,"5xx", status>=400,"4xx", status>=300,"3xx", status>=200,"2xx")
| timechart span=1h count by status_group
Refer to the exhibit. This search returns an error. What is the most likely cause?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "most likely"
Why it matters: Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The timechart command requires a _time field which is not present after stats
The error occurs because the `stats` command removes the `_time` field from the events, and `timechart` requires a valid `_time` field to create time-based buckets. Without `_time`, `timechart` cannot generate the time axis, resulting in a search error. This is a common pitfall when chaining `stats` before `timechart` without preserving the time field.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
The timechart command requires a _time field which is not present after stats
Why this is correct
Stats does not preserve _time unless explicitly used in a by clause.
Clue confirmation
The clue word "most likely" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
The eval command cannot be used before timechart
Why it's wrong here
Eval is perfectly valid before timechart.
✗
The status_group field is not available after timechart because it was created in eval
Why it's wrong here
status_group is available before timechart, so timechart can use it.
✗
The stats command aggregates data, so timechart cannot use the aggregated count field
Why it's wrong here
Timechart can use aggregated fields, but the issue is missing _time.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Splunk often tests the misconception that `stats` preserves `_time` by default, leading candidates to overlook that `timechart` requires an explicit time field in the result set.
Detailed technical explanation
How to think about this question
Under the hood, `timechart` relies on the `_time` field to bin events into time spans (e.g., `span=1h`). When `stats` is used without a `by` clause that includes `_time`, the output loses the `_time` field entirely. A common workaround is to use `bin _time span=1h` before `stats` or to use `timechart` directly without prior `stats`. In real-world scenarios, this error often appears when building dashboards that require time-based aggregation after data reduction.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
TExam Day Tips
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A practitioner preparing for the SPLK-1003 exam encounters this exact type of scenario on the job. The correct answer here is not the most general option — it is the best answer for the specific constraint described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Real exam questions reward reading the full scenario before eliminating options, because the constraint defines which answer fits.
What to study next
Got this wrong? Here's your next step.
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Advanced Searching and Statistics — This question tests Advanced Searching and Statistics — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The timechart command requires a _time field which is not present after stats — The error occurs because the `stats` command removes the `_time` field from the events, and `timechart` requires a valid `_time` field to create time-based buckets. Without `_time`, `timechart` cannot generate the time axis, resulting in a search error. This is a common pitfall when chaining `stats` before `timechart` without preserving the time field.
What should I do if I get this SPLK-1003 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
Are there clue words in this question I should notice?
Yes — watch for: "most likely". Probability qualifier — the question wants the most probable cause or outcome, not a guaranteed one. Eliminate low-probability options.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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