AQA GCSE ISA SECTION 2 GUIDE

AQA GCSE ISA SECTION 2 GUIDE

1. HYPOTHESIS

   • Valid statement
   • Refer to pattern and some examples from results

2. VARIABLES

   • Identify all 3 variables

3. ANOMALOUS

   • Statement (yes/no)
   • Anomalous results are those that do not fit the pattern
   • Give examples OR say that all results are very close to a line of best fit

4. ERROR

   • Appropriate source of error
   • Suitable solution
   • Explain how solution overcomes the problem

5. RESOLUTION

   • Correct resolution value
   • Correct statement as to whether or not the resolution was appropriate is given and there is a clear explanation
   • Convey understanding of term resolution

6. REPRODUCIBLE

   • Correct statement whether or not the results are reproducible
   • Detailed explanation use at least two examples

7. DIFFICULTIES

   • Identify a problem in obtaining results
   • Suggest a simple solution the problem
   • Explain how the solution overcomes the problem

8. REPEAT READINGS - ACCURATE

   • A mean should be calculated
   • by adding the results together and dividing by the number of values
   • EITHER anomalous results are discarded before calculating a mean OR a graph is plotted and a best fit line is drawn ignoring anomalous results

9. REPEAT - WHY

   • Correct statement whether or not any results were repeated
   • Reference to anomalous or systematic error or random errors with reference to results and the effect they cause
   • Independent variable

10. RANGE

    • State range (UNITS)
    • Explain suitability

11. SIMILAR PATTERN

    • Statement (yes/no)
    • Describe similarity or difference
    • Example from results

12. DIFFERENT RESULTS

    • Different equipment/ different technique
    • An example of what might have caused the differences and an explanation of this

13. SKETCH GRAPH

    • Label both axes with variables
    • Draw an appropriate line

14. CASE STUDY ANALYSIS

    • Correct statements of 1, 2, 3
    • Detailed explanation of 2 and 3

15. CONTEXT

    • Relate results to context
    • Detailed explanation of how results/ideas can be applied and used in context

16. DESCRIBE THE EFFECT

    • Quantitative effect
      • Identify relevance