Experiments And Data Flashcards
Observation
Carefully looking at a process of an object
Investigation
An experiments or set of experiments designed to produce data
Data
Words or number
-you obtain when making observations or measurements
Variable
A quantity that can change
Independent variable
A quantity that you can change which will affect the dependent variable
Dependent variable
A variable that is affected by the independent variable
Control variable
A variable that you have to keep the same in an investigation
Prediction
Statement that says what you think will happen
Plan
-description of how you will use equipment to collect valid data
Precise
A set of repeat measurements that are close together
Spread
Highest - lowest measurements of a set of repeat measurements
Uncertainty
The doubt in the result because of the way that a measurement is made
Repeatable
When you repeat measurements in an investigation and get similar results
Reproducible
When other people carry out the same investigation and get similar results to the original investigation
Continuous
A variable that has value ps that can be any number
Categoric
A variable that has values that are words
Discrete
A variable that can only have whole number values
Range
-difference between highest and lowest values of a variable
Risk assessment
A description of how you will ensure less injury or damage
Accurate
- Close to the true value of what you are measuring
- data can be precise but no accurate
Investigation should include
- what equipment will be used + why
- methods used +why
Plans should include
- scientific question
- independent/ dependent variable
- list of variables to control + how
- prediction
- list of equipment
- risk assessment
- how to use equipment to collect accurate/precise data
Outlier
A result that is very different from other measurements in a data set
Mean
An average of a set of data
-found by adding together all the values and dividing by the number of values in the set
