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Observations. Biology 1. Types of observations/research: . Qualitative : when the object is described in terms of quality. (It was green. It smelled like candy.) - PowerPoint PPT Presentation
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ObservationsBIOLOGY 1
Types of observations/research:
Qualitative: when the object is described in terms of quality. (It was green. It smelled like candy.)
Quantitative: when the object is described or measured in concrete numerical terms. (there are 30 students in my class. I ate 1 pound of potatoes.)
Determine which are qualitative and which are quantitative:
The cup had a mass of 454 grams.
Determine which are qualitative and which are quantitative:
The cup had a mass of 454 grams.
Quantitative
Determine which are qualitative and which are quantitative:
The temperature outside is 25° C.
Determine which are qualitative and which are quantitative:
The temperature outside is 25° C.
Quantitative
Determine which are qualitative and which are quantitative:
It is warm outside.
Determine which are qualitative and which are quantitative:
It is warm outside.
Qualitative
Determine which are qualitative and which are quantitative:
The tree is 30 feet tall.
Determine which are qualitative and which are quantitative:
The tree is 30 feet tall.
Quantitative
Determine which are qualitative and which are quantitative:
The building is taller than the tree.
Determine which are qualitative and which are quantitative:
The building is taller than the tree.
Qualitative
When does an observation become an inference?
Observation: Using one or more of your senses to gather information and record facts.
Example: There is one projector in the room.
When does on observation become an inference?
Inference: logical interpretation based upon prior knowledge and experience.
Example: Since students are wearing coats, it must be cold outside.
In a Lab Setting
Record your data as observations and facts, NOT inferences.
Inferences can be used in your analysis and conclusion portion of your lab report.
Now, lets practice!
Observation/inference practice