Writing a Lab Report Analysis, Conclusion and Evaluation Interpretation Experimental of results error Conclusions Areas for future improvement / alternatives to design Analysis The most interesting section of your lab report! This section must be original! There shouldn’t be the need for many references in this section! Questions to ask What was observed? How does the data related to greater concepts/ideas covered in class What was the experimental error Statements to avoid…. The experiment went well… Our results were good because... The temperature cooled a lot. There was a big drop in temperature. Instead… Between t=Xs and t=Ys, the temperature of Lauric acid cooled from X°C to Y°C. From this figure, we can calculate an average rate of cooling. Average rate of cooling = (T2 – T1)/ (t2-t1) It’s okay to make mistakes! Mention it while you’re explaining your data. People don’t have to be perfect all the time, don’t ignore errors! Random Error These can be mistakes and human error Systematic Error These can be difficult to detect Include things like poor calibration (i.e. was the temperature reading the ‘true’ temperature). Experimental Error How to calculate: Percent Error = [Actual Value – Theoretical Value] * 100 Theoretical Value Conclusion This only needs to be 2-3 sentences. Tie it back to your original statement in the introduction (Answer your question) Do not summarize your results again Do not present any new ideas Evaluation Suggestions for improving results should the experiment is conducted again.