How to Identify Statistical Questions
Not every question is a statistical question — and knowing the difference is a foundational skill for the GED Math test. A statistical question expects a variety of answers and requires collecting and analyzing data to answer it. This lesson explains the key distinction and gives you plenty of examples to practice with.
What Is a Statistical Question?
A statistical question is one that anticipates variability in the answers. That means you expect different responses from different people, places, or times, and you need to gather data to see the range of answers. A non-statistical question has exactly one definite answer — no data collection needed.
- Statistical: “How many hours do students in your class sleep each night?” — Each student sleeps a different amount, so answers will vary.
- Non-statistical: “How many students are in this classroom right now?” — There is one specific count at one moment in time.
How to Identify a Statistical Question
1. Check for variability
Ask yourself: “Would different people (or different times, or different objects) give different answers?” If yes, it is most likely a statistical question.
2. Check whether data collection is needed
Statistical questions require gathering multiple data points and often summarizing them with measures like mean, median, or a graph. Non-statistical questions can be answered with a single observation or look-up.
3. Watch for key signals
Words like typically, on average, usually, what are the heights of…, or how many hours do… usually… often signal statistical questions. Words like exactly, right now, or what is the… of this specific… often signal non-statistical questions.
Step-by-Step Summary
- Read the question carefully.
- Ask: “Is there one definite answer, or will answers vary?”
- If answers vary and data collection is required → Statistical.
- If one exact answer exists → Non-statistical.
- Double-check by thinking about whether measures like mean or median would be useful — if yes, it is statistical.
Watch: Statistical vs. Non-Statistical Questions (Khan Academy)
This Khan Academy video explains the concept clearly with relatable examples:
Worked Examples
Example 1: Is this a statistical question? “What is the temperature outside today?”
Non-statistical. At any given moment, the temperature is a single specific value. There is no variability in one reading.
Example 2: Is this a statistical question? “What are the heights of the players on a basketball team?”
Statistical. Each player has a different height. The question expects a set of varying values and would require collecting and comparing data.
Example 3: Is this a statistical question? “How many pages are in this textbook?”
Non-statistical. The textbook has a fixed page count — one exact answer.
Example 4: Is this a statistical question? “How many hours per week do adults in your neighborhood watch TV?”
Statistical. Different adults will report different amounts, so data collection and analysis (e.g., finding the average) are needed.
More Practice: Statistical Questions at the 6th-Grade Level
This focused Khan Academy lesson reinforces the concept with additional practice questions:
Exercises
Label each question S (statistical) or N (non-statistical).
- How many siblings does your teacher have?
- How many siblings do students in your class have?
- What is the boiling point of water at sea level?
- How long does it take commuters in a city to get to work?
- How many letters are in the word “statistics”?
- What are the speeds of cars passing through a school zone on a given morning?
Answers
- N — One exact answer for one specific person.
- S — Different students have different numbers of siblings; data varies.
- N — 100°C is a fixed scientific fact.
- S — Commute times vary from person to person.
- N — “Statistics” has exactly 10 letters.
- S — Car speeds vary; you need multiple observations to answer it.
Frequently Asked Questions
What is the key test for a statistical question?
The key test is variability: if you asked many different people (or measured at many different times or places), would you get a spread of different answers? If yes, it is a statistical question. If the answer is always the same one value, it is non-statistical.
Can a question be both statistical and non-statistical depending on context?
Sometimes the wording matters. “What is the age of the president?” refers to one specific person at one moment — non-statistical. But “What are the ages of U.S. presidents when they took office?” asks about many different individuals across time — statistical. Paying attention to whether the question targets one specific answer or a distribution of answers is the key.
Why do statistical questions matter on the GED?
The GED often asks you to interpret data sets, graphs, and tables. Recognizing that those data sets are answers to statistical questions helps you understand why measures of center (mean, median) and measures of spread (range, IQR) are used — you need them to summarize the variability in the answers.
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