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21 terms

Graphing

STUDY
PLAY
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
dependent or responding variable-
affected by the independent variable; placed on the y-axis of a graph
quantitative-
obtained by measuring or counting
qualitative-
describes, but not obtained by measuring or counting
pie graph-
AKA circle graph; shows how a whole is divided into parts (percentages)
bar graph-
used when one factor is qualitative and the other is quantitative
line graph-
used when both variables are quantitative; the most common type of scientific graph
range-
difference between the highest value and the lowest value in a data set
scale-
the numeric value for each interval (square) on an axis
column-
series of cells going up and down in a data table
row-
series of cells going across in a data table
vertical-
going up and down
horizontal-
going across (left to right); parallel to the horizon
x-axis-
horizontal axis; used for the independent variable
y-axis-
vertical axis; used for the dependent variable
graph-
used to display the data; 3 types - pie, bar, and line
data table-
used to collect (store) data; made up of rows and columns
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
correlation-
describes the relationship between two variables; can be positive or negative
title-
follows the format "Effect of Independent Variable on Dependent Variable"; data table and corresponding graph should always match
label-
indicates name of variable; includes units in parentheses