Internal Assessment

An Eight-Step Guide

Step Six: Graphing and Interpeting Data

By the end of this step you will have:

✔︎  Plotted your data on a graph

✔︎  Justified your error bars and added them to your graph

✔︎  Created a trend line

✔︎  Written a paragraph interpreting your data

Plotting your data on a graph

Explaining and adding error bars to your graph

Fitting a trendline to your data

Interpreting your data

Actions

➜  Plot your data on a graph

➜  Explain and add error bars to your graph

➜  Fit a trendline to your data

➜  Interpret your data

Checklist

 

✔︎  I fully and correctly labelled my graph (title, variables, units)

✔︎  I plotted all data points from my processed data table

✔︎  I justified my horizontal and vertical error bars

✔︎  I added error bars to my graph (if applicable)

✔︎  I tried to fit different trendlines to my data

✔︎  I chose the trendline that best fits my data and added it to the graph (if applicable)

✔︎  I briefly explained my choice for the trendline, referring to the R² value

✔︎  I briefly discussed the equation of the trendline

✔︎  I completed the interpretation paragraph by discussing the shape of my graph and the relationship between my variables

Questions to ask your teacher

✤  Is the graph fully and correctly labelled?

✤  Are the data points correctly plotted?

✤  Are the error bars correctly shown on the graph?

✤  Is the trendline correctly drawn?

✤  Is the justification for including/not including error bars on the graph clear and valid?

✤  Is the justification for choosing the trendline clear and correct?

✤  Is the R² vaule used correctly?

✤  Is the discussion about the trendline equation clear and correct?

✤  Is the interpretation about the shape of the graph and the relationship between the variables correct?

Additional resources

Example IA (PDF)

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