LABORATORY REPORTS / WRITE-UP of an EXPERIMENT
Criterion C – Processing & Evaluation

Make sure you have:
  • QUALITATIVE DATA
This means you also need to talk about FACTORS which could IMPROVE REPRODUCTIBILITY - so anything which could help someone else reproduce your experiment more accurately e.g. ambient temperature (the temperature of the lab where you did it) .....
(as well as Quantitative Data i.e. the data you counted/measured)
  • UNCERTAINTIES
This usually depends on the PRECISION of the INSTRUMENT you used to take your measurements/readings (and they often have it printed on the front somewhere)
e.g. if the scale is:
29 30 31 32 33
then the uncertainty would be: ±1
so your reading would be 30 ±1 i.e. could be 29, 30 or 31
  • CORRECT to SAME Nº of DECIMAL PLACES
e.g. 3.88
4.6
5.01 change the 4.6 to 4.60
TABLES

  • should be INTEGRATED
i.e. any data you will compare/contrast .... integrate the graphs
  • TITLES (!!!!!)
must be COMPLETE & SPECIFIC. Remember ... if there is no title it will be IMPOSSIBLE to read your data
  • UNITS
always include UNITS of MEASUREMENT in the column headings
  • LABELS
Graphs – make sure you LABEL the AXES (name them) and add the unit of measurement
  • CALCULATIONS
when you are processing your raw data you often have to calculate e.g. an average, or if you are comparing temperature loss and time to find the rate of change.... so SHOW your CALCULATION (your working out)
  • TRENDS
show the trends!
  • CITE your DATA
quote specific values from your measurements/data when describing or explaining your results/conclusions.
  • Using PERCENTAGES for COMPARISON
when comparing/contrasting your data use % to highlight it...
e.g. Flask B lost 50% more heat than Flask D.