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Experimental Design, Metric Units, Conversion, and Measurments Vocabulary for Dr. Goodwin's Unit 1 Test.

### Control Group

in an experiment, a group that serves as a standard of comparison with another group to which the control group is identical except for one factor

### Replicate (Sample Size)

The number of times you do the experiement per experimental group or how many times you test something per experiemental group.

### Continuous Variable

A quantitative variable that can assume an uncountable number of values. Can assume any value along a line interval, including every possible value between any two values.

### Discrete (Categorical) Variable

Distinct groupings and no variation in between those groups. Appropriate to use a bar graph.

### Hypothesis

Specific declaritive statement; educated guess on what you believe the relationship between the control group and test group.

### Prediction

A statement made in advance that expresses the results that will be obtained from testing a hypothesis if the hypothesis is supported; the expected outcome if a hypothesis is accurate.

### Meniscus

the curve at a liquid's surface by which you use the botom to measure the volume of the liquid

### Precision of an instrument

1 place past the marks. Even if the answer is a whole number use zeros to get the correct precision.