Answer to essential questions from Unit 1.3

1. Our ancestors created measurement standards out of the need for standardization.

2. The International Organization for Standardization (ISO) is responsible for establishing measurement standards that are used by engineers and manufacturers today.

3. Engineers apply dimensions to drawings to communicate size information.

4. Manufactured parts are often created in different countries, where dimensional values are often converted from one standard unit to another. Therefore an incorrect measurement could be spread and used, yet be wrong with millions of users believing it is right.

5. The amount of variation that can be measured depends on the precision of the measuring tool.

6. Statistical analysis of measurements can help to verify the quality of a design or process.

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