004 - Quality and treatment of information collected.
6 marks our of 25
Suggested Word Limit
None it will all be in graphical or statistical form.
Activity One - Graphs
For this section you need to convert your raw data that you collected on the day trip to L'Asse into a range of graphs. You should only use data that is directly relevant to your hypothesis. You should use a range of skills and they must present the data effectively. All your graphs, diagrams and photographs should be fully integrated into the analysis section. They should not be in a section on their own.
'Appropriate Techniques' - What?
The IBO DP Geography guide asks for the most 'appropriate' techniques be use to display the data but what does this mean?
Good quality of presentation
Graphs - Examples
It is entirely up to you what types of graphs you use but do try and make sure you bottom axis shows the distance from the source if you are doing a line graph. The types of graphs that you could use (this list isn't finite) include:
Bar graphs - to show bedload size
Line graphs - to show velocity, width, depth, wetted perimeter or long profile of the river
Scattergraphs - to show the relationship between data such as velocity and discharge
Proportional circles - to show velocity or sediment size
Located bar graphs
Cross sectional diagrams - to show area, width and depth of the river
Once you have decided what types of graphs to use then you need to make sure that they all have:
Label or annotate any data that stands out
Calculation for the Flow Meter
To convert flow velocity from “revolutions per minute” to m/sec; Multiply the count x 0.000854 and add 0.05.
You should also include visual evidence of what you saw. This could be in the form of sketch diagrams or photographs. Which ever method you chose you need to make sure you 'add value'. This means that they either need to be labelled or annotated and then referred to in the body of your analysis.
Remember every image needs a figure number and a title.
I would strongly encourage you to include some form of statistical analysis in you IA as it will help to show how strong your correlations are. A member of the Maths department will come in and talk through how to use statistical tests with the data you have collected. Examples of statistical tests include:
Spearman Rank (Pearson's Coefficient
How will I be Assessed?
You will be assessed using the criteria below, make sure you read it carefully.
Image One - Assessment Criteria - Quality and treatment of information collected
Please also visit www.geographyalltheway.com for more advice on how to complete your IA.