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Observation vs. Inference. Preparing for Labs. Observation. When describing something, use only facts that you can see, feel, smell, taste and hear This is not an opinion!!!!!. Qualitative vs. Quantitative Observations. Quantitative: Descriptions of how much
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Observation vs. Inference Preparing for Labs
Observation • When describing something, use only facts that you can see, feel, smell, taste and hear • This is not an opinion!!!!!
Qualitative vs. Quantitative Observations • Quantitative: Descriptions of how much • Observations are measurable and can be made using instruments such as beakers, scales, rulers, ect. • Use numbers • Quantity • Qualitative: Use adjectives to describe something • Quality
Examples: Qualitative or Quantitative • 1. It is light green in color. • 2. It taste sour. • 3. One leaf is 9 cm long. • 4. It makes a loud pop sound. • 5. The mass of the computer is 1 1/2 kg. • 6. It smells sweet. • 7. The temperature of the room increases by 8 degrees C. • 8. The flower clusters in 3 blooms. • 9. Feels very rough. • 10. The veins are 3 mm wide.
Inference • Using your observations to explain something • A scientific opinion • Ex. • Observation: the grass on the school’s front lawn is wet • Inference: it rained, a sprinkler is on, it is from the morning dew, a dog urinated on the grass
