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Metrics Trix

Metrics Trix. The SI system. International system Système international d'unités. A measurement system provides quantitative data. Quanti tative means a number is used. You are measuring a quantity. Quali tative data: It turned red It is cold It started steaming

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Metrics Trix

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  1. Metrics Trix

  2. The SI system • International system • Système international d'unités

  3. A measurement system providesquantitativedata • Quantitative means a number is used. You are measuring a quantity. • Qualitative data: • It turned red • It is cold • It started steaming • You are measuring a quality

  4. Basic units • Linear measurement: meter • Mass: gram, but Kg is the standard • Volume: liter • Time: second • Temperature: degrees Celsius • Absolute temperature: Kelvins

  5. Approximations • 5 miles is about 8 Km • Meter is about a yard • 2.54 cm = 1 inch • 1 paper clip is about 1 gram • 22 pounds = 10 Kg • 1 liter is about 1 quart • 3.7 L = 1 gal

  6. KHD_dcm

  7. Best units • Most sensible number • Best accuracy

  8. Types of measurements • Direct • Indirect

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