Accuracy An accurate measurement is close to the true value.
Reliability The trustworthiness of data collected.
Valid data Evidence that can be reproduced by others and answers the original question.
Precision Where your repeat results are very close to each other. This is related to the smallest scale division on the measuring instrument used.
Opinion Opinions are personal judgements. Opinions can be formed from scientific evidence or non-scientific ideas.
Hypothesis Using theory to suggest explanations for observations. E.g. ‘I think that the plants are smaller because they do not have enough water.’
Evidence Scientific evidence should be reliable and valid. It can take many forms. It could be an observation, a measurement or data that somebody else has obtained.
Conclusion A conclusion considers the results and states how those results match the hypothesis. The conclusion must not go beyond the data available.
Categoric variable These tell us the name of the variable e.g. copper, iron, magnesium.
Continuous variable A continuous variable can be any numerical value, e.g. your own weight.
Discrete variable These are numerical, but can only be whole numbers e.g. numbers of layers of insulation.
Ordered variable Variables that can be put into an order e.g. small, large, huge lumps of rock. These tell us more than categoric variables.
Control variable These are the variables that might affect your result and therefore must be kept the same for a valid investigation. E.g. volume of acid used.
Dependent variable The variable that you are measuring as a result of changing the independent variable. E.g. the volume of CO2 produced.
Independent variable The variable that you have decided to change in an investigation. E.g. temperature of the acid. These are the variables that might affect your result and therefore must be kept the same for a valid investigation. E.g. volume of acid used.
Thanks to http://10l1.blogspot.com/
