1. Objectives 11-13 11 -Make qualitative and quantitative observations
12 - Distinguish between an observation and an inference
13 -Distinguish between an independent and dependent variable

2. Types of Observations Quantitative - notes how many.
5 days, 6 legs, 10 fingers
Qualitative - description other than a number.
color, taste smell

3. Observation vs. Inference
Observation - act of noticing something
Inference - conclusion based on an observation

4. Example of an Inference
Observations
it has six legs
it is green
it has three body parts
it has 2 wings

5. Example of an Inference
Observations
it has six legs
it is small
it has three body parts
it has 2 wings
inference = It is an insect

6. Dependent vs. Independent Variables and Controls
Control-unaltered part of the experiment used as a standard for comparison
Variable- A quantity or quality that is subject to change
Independent variable-variable that is manipulated in an experiment
Dependent variable-variable affected by the independent variable