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26 Cards in this Set

  • Front
  • Back

Prediction

What you think will happen in an experiment.

Valid

The results and conclusion will be this if the variables are correctly controlled.

Fair Test

This is where only the independent variable is changed and everything else is controlled

Hypothesis

A scientific statement that explains certain facts and observations.


Interval

The difference between the values of your independent variable.

Data

Information or values that you collect

Datum

One piece of information.

Systematic error

An error that is always the same during a repeat- usually an error in equipment.


Resolution

The smallest change that can be read using a measuring device.

Repeatable

If the same person can get the same reading using the same equipment and method.

Categoric Variable

A variable that can be described using a label or category. E.g. color or surface.

Control Variable

Variable that stays constant. Makes experiment valid.


Independent Variable

The variable that is changed during the experiment. Usually only one.

Continuous Variable

A variable that can have a numerical value.

Dependent Variable

The variable that changes due to a change in the independent variable.

Uncertainty

The range around a true value.

Measurement Error

The difference between the real value and measured value.

Anomaly

Result that doesn't fit the pattern.

Random Error

Error that causes measurements to be spread around the true value.

Zero Error

When measuring equipment should read zero but doesn't.

Accuracy

How close the reading is to the true value.

Precision

This is determined by the scale on the measuring apparatus.

Calibration

When we make sure that the measuring apparatus is making the correct readings.

True Value

The real value of a measurement in an experiment.

Reproducible

If another person can get the same results using the same equipment and method or different equipment/method.

Range

The maximum and minimum values of the independent and dependent variable.