GEH statistic

High school (ages 12+)
Mathematics & Numbers

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Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/geh-statistic

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. Who invented GEH statistic?1970s
2. How big is GEH statistic?Traffic engineering, forecasting, and modeling
3. What is the formula name?GEH statistic
4. What is the inventor?Geoffrey E. Havers
5. What is the GEH statistic and why do traffic engineers use it?The GEH statistic is a formula that compares traffic model numbers with real traffic counts. It helps engineers see if their predictions match what actually happens on the road.
6. How does the GEH formula work?It takes the difference between the model count (M) and the real count (C), squares that difference, divides by the sum of M and C, multiplies by 2, and then takes the square root. The result shows how close the two numbers are.

Traffic Model: A computational representation used to simulate and predict traffic flow and behavior on transportation networks.
Observed Traffic Volume: The actual number of vehicles recorded passing a specific point on a road during a defined period.
Empirical Formula: A mathematical relationship derived from experimental data and observation, rather than theoretical principles.
Model Validation: The process of assessing how accurately a traffic model represents real-world traffic conditions.