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# Analysing and Discussing your Results

#### Bath Bomb Project

# Plotting Graphs

If you have numerical data, the first step in analysing your results is to plot a graph. On the x axis, plot the independent variable (what you varied). On the y axis, plot the dependent variable (what you measured). Carefully plot your data points on the graph. Can you draw a trendline?

# Identifying Trends

Looking at your graph, you should be able to observe a trend in your results - this is most easily illustrated by drawing a trendline (also known as a line-of-best-fit). As you increase the independent variable (what you changed), how does the dependent variable (what you measured) change? Were there any unusual results which didn't fit the trend (anomalies)?

# Discussing the Science

Once you have analysed any trends in the data, you can now think about *why* those trends are observed. Remind yourself of the science of bath bombs - can you use this scientific knowledge to explain what you observed? If you actually observed something which appears to disagree with the science, can you think of a reason? You may have discovered some new science!