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Line Graphs
Line graphs should be chosen when there is continuous numerical data for both the independent and the dependent variable.
- Ensure that the dependent variable is on the vertical axis and the independent variable is on the horizontal axis.
- Points should be plotted accurately using a very small circled dot.
- Select the appropriate method of drawing the line. If there is a definite relationship between the two variables then draw a line of best fit (this may be a curve or a straight line.) If not then join the points with a ruler.
- Do not extrapolate the graph beyond the data (eg it may not necessarily go through 0.)
- Where two or more lines are included on the same axis differentiate them with different types of lines (eg................. or ------------ etc) and include a key.
Line Graph
Column/bar graphs
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Data Analysis
Organisation
of Data
Drawings
Tabulating info
Graphing
Line graphs
Column graphs
Histograms
Scatter graphs
Two+
variables
Summary
Analysis of Data
Trends
on a graph
Guidelines from BIOTA
Report Writing
Working Scientifically
Observations
Observation Questions
Hypothesis Formation
Experimental Design
Aspects
Ethics
Types of Research
Data Analysis |
