###
independent or manipulated variable-

changed on purpose usually at regular intervals; usually found in the first column (or first row) of a data table; placed on the x-axis of a graph

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dependent or responding variable-

affected by the independent variable; placed on the y-axis of a graph

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quantitative-

obtained by measuring or counting

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qualitative-

describes, but not obtained by measuring or counting

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pie graph-

AKA circle graph; shows how a whole is divided into parts (percentages)

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bar graph-

used when one factor is qualitative and the other is quantitative

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line graph-

used when both variables are quantitative; the most common type of scientific graph

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range-

difference between the highest value and the lowest value in a data set

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scale-

the numeric value for each interval (square) on an axis

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column-

series of cells going up and down in a data table

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row-

series of cells going across in a data table

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vertical-

going up and down

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horizontal-

going across (left to right); parallel to the horizon

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x-axis-

horizontal axis; used for the independent variable

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y-axis-

vertical axis; used for the dependent variable

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graph-

used to display the data; 3 types - pie, bar, and line

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data table-

used to collect (store) data; made up of rows and columns

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method for calculating scale-

1. divide range by squares 2. if necessary, bump up to the next HIGHER number that is easy to work with

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correlation-

describes the relationship between two variables; can be positive or negative

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title-

follows the format "Effect of Independent Variable on Dependent Variable"; data table and corresponding graph should always match

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label-

indicates name of variable; includes units in parentheses

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