Estimation

Definition

Estimation is the process of making an educated guess or approximation of a value based on available information. It is often used when exact measurements are impractical or impossible.

5 Must Know Facts For Your Next Test

1. Estimations are useful for quickly approximating values in physics problems where precise data may not be available.
2. Fermi calculations involve making rough estimates using powers of ten to simplify complex problems.
3. The accuracy of an estimation depends on the quality and quantity of known information.
4. Significant figures play a crucial role in ensuring that estimations have a reasonable degree of precision.
5. Dimensional analysis can help verify that the units in an estimation are consistent and plausible.

Review Questions

• What is the primary purpose of making estimations in physics?
• How do Fermi calculations simplify complex problems?
• Why are significant figures important when making estimations?

Related terms

Fermi Calculation: A method for estimating values using rough approximations and powers of ten.

Significant Figures:

Digits in a number that contribute to its precision, including all certain digits and one uncertain digit.

Dimensional Analysis:

A technique for checking the consistency of units in equations and calculations.