Hypothesis - A possible explanation for an observed - testable and falsifiable, Prediction - Focuses on the relationship between two variables - if ... then ..., Independent variable - The factor that is changed in the experiment, Dependent variable - The factor that depends on the independent variable, often measured, Controlled variable - Factors kept constant in order to ensure that the experiment is a fair test, Qualitative data - Data that we observe with our senses, such as colour changes, smells and tastes, Quantitative data - Data that involves measurement and always numerical values, Primary data - Data that is generated when carrying out the experiment, investigation, survey or questionnaire, Secondary data - Data that are collected by someone other than the experimenter, Objective - A way at looking at something that is not influenced by personal feelings or opinions, Subjective - A way of looking at something that is based on personal feelings or opinions, Statistical uncertainty - The experimenters inability to take the same measurement in exactly the same way each time, Systematic uncertainty - Caused by measuring instruments that are incorrectly calibrated or a defect in measuring equipment, Precision - How close the measurements are to eachother, Accuracy - How close a measurement is to its true value,

Hypothesising and experimenting

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