direct relationship - both variables increase or decrease, inverse relationship - one variable increases and the other decreases, cyclic relationship - one variable increases while the other increases and decreases, repeats itself over tiem, Qulaitative data - data that describes the qualities of something without using numbers, quantitative data - data that is numerical, any measurement, independent variable - the variable that changes and DOES NOT depend on another variable , dependent variable - the variable that DEPENDS on the independent variable, Label the x-axis with - the independent variables, Label the y axis with - the dependent variables, human error - accounts for errors due to mistakes in measurement, misuse of lab materials , evironmental errors - errors that are not in our control such as wind altering readings ,

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