Environmental systems and societies (ESS) - Old IA Exemplar:… | RevisionDojo
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IB Environmental systems and societies (ESS) - Old SL Internal Assessment Example
How does different household incomes of individuals in Klang influence their
awareness of photovoltaic systems (PV) in reducing air pollution?SL
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6
Official IB Result
22/30
Criteria A: Identifying the Context (CXT)
5/6
0
3
6
Criteria Strands
A.1Research question formulation
Excellent
A.2Environmental issue context
Excellent
A.3Connection between issue and research
Good
Criteria Feedback
Formulates a precise, focused research question identifying income categories, PV awareness and geographic scope
Provides strong environmental context linking PM₁₀ exceedances in Klang to health and visibility concerns
Includes peripheral global mortality data reducing local focus
Asserts socioeconomic influences on PV awareness without fully unpacking causal mechanisms and confounding factors
1.1·Strength
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The research question is precise and focused, identifying key variables (income categories, PV awareness) and the geographic scope (Klang) clearly, facilitating targeted investigation.
1.2·Weakness
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The introduction provides strong environmental context but incorporates peripheral global mortality data; consider focusing on local PM10 exceedances for deeper relevance.
1.3·Suggestion
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The connection section asserts socioeconomic influences on PV awareness but omits detailed mechanisms; unpack causal pathways and potential confounders for completeness.
Criteria B: Planning (PLA)
4/6
0
3
6
Criteria Strands
B.1Method design
Good
B.2Sampling strategy
Excellent
B.3Risk and ethical considerations
Moderate
Criteria Feedback
Designs a repeatable Google-form survey with clear variables and planned statistical tests
Justifies quota sampling effectively to represent all income brackets
Omits details on coding non-responses, handling missing data and ANOVA assumptions
Ethical section lacks full treatment of data storage, withdrawal rights and bias mitigation
2.1·Weakness
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The variables table outlines independent, dependent, and fixed factors well but lacks detail on coding non-responses and handling missing data; specify these to ensure method repeatability.
2.2·Suggestion
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Ethical considerations omit data storage protocols and withdrawal rights; include these to comprehensively address participant protection and data security.
2.3·Strength
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Quota sampling is clearly justified to ensure representation across income brackets, demonstrating sound sampling strategy aligned with research aims.
Criteria C: Results, Analysis and Conclusion (RAC)
6/6
0
3
6
Criteria Strands
C.1Data presentation
Excellent
C.2Data analysis
Excellent
C.3Conclusion drawing
Excellent
Criteria Feedback
Presents all relevant data in appropriate tables and charts
Analyzes data correctly and completely, identifying clear group patterns
Draws conclusions fully supported by statistical evidence (P < 0.05)
Minor formatting glitches in tables and figure captions
Typographical error in ANOVA degrees of freedom header
Needs clarification on choice of population vs. sample SD formula
3.1·Strength
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Tables present all demographic and awareness data clearly with percentages; the comprehensive presentation meets full-data visualization standards.
3.2·Suggestion
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The mean formula is correctly displayed but would benefit from a brief reminder of symbol definitions inline to aid reader comprehension.
3.3·Question
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The standard deviation calculation uses population formula; clarify if n‐1 should be used for sample data or justify population approach.
3.4·Strength
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The attitude questions table is fully comprehensive, presenting means and standard deviations for each group, facilitating thorough comparison.
3.5·Suggestion
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Challenge data table is clear and presents both counts and percentages; consider aligning rows for better readability given multi-row question text.
3.6·Suggestion
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Figure 9.0 illustrates group means and SDs effectively; add a note on p-value threshold and df to reinforce the ANOVA interpretation.
3.7·Weakness
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The ANOVA table reports df=4 for between groups but with three income groups df should be 2; correct this to ensure statistical accuracy.
3.8·Strength
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The conclusion restates statistical findings (p<0.05) and ties results to the hypothesis clearly, providing a valid evidence-supported interpretation.
Criteria D: Discussion and Evaluation (DEV)
3/6
0
3
6
Criteria Strands
D.1Conclusion evaluation
Moderate
D.2Method evaluation
Moderate
D.3Improvements and extensions
Moderate
Criteria Feedback
Evaluates reliability using error bars and p-values, acknowledging missing factors
Identifies clear strengths (reach, cost) and weaknesses (social-desirability bias) of the method
Suggests meaningful mixed-methods improvements and further research
Does not evaluate broader environmental implications of the conclusion
Omits discussion of sampling-bias limitations
Improvement suggestions are not explicitly linked to each weakness
4.1·Weakness
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Evaluation of the conclusion mentions error bars but omits broader environmental implications; include interpretation in context of air-quality improvements.
4.2·Weakness
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The discussion identifies strengths and weaknesses of the survey but neglects sampling‐bias limitations; address representativeness concerns in the evaluation.
4.3·Suggestion
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Consider adding qualitative interviews or focus groups to deepen insights on why income influences PV awareness, enhancing the study’s scope and depth.
Criteria E: Applications (APP)
2/3
0
2
3
Criteria Strands
E.1Application proposal
Excellent
E.2Solution evaluation
Good
Criteria Feedback
Proposes a government programme tightly aligned with findings on B40 awareness
Justifies the application based on data-driven economic rationale
Evaluation of solution omits scalability and unintended environmental impacts
Does not fully explore trade-offs in the proposed application
5.1·Strength
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The policy proposal focuses appropriately on the B40 bracket and aligns with findings; the targeted government MySuria scheme justification is well supported.
5.2·Weakness
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Solution evaluation mentions accessibility and cost but omits scalability and unintended environmental impacts; expand evaluation of potential trade-offs.
Criteria F: Communication (COM)
2/3
0
2
3
Criteria Strands
F.1Structure and organization
Good
F.2Terminology and concision
Good
F.3Logic and coherence
Good
Criteria Feedback
Follows IB structure with logical progression from data to interpretation
Uses appropriate ESS and statistical terminology accurately
Large raw tables and formatting errors disrupt readability and flow
Report exceeds concision guidelines and contains some repetition
Figure captions and formatting inconsistencies impede smooth comprehension
6.1·Suggestion
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The RQ title is repeated in the hypothesis section; streamline to avoid redundancy and improve conciseness.
6.2·Weakness
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Survey question formatting is inconsistent (Likert anchors and numbering); standardize scale presentation to enhance clarity and reduce respondent error.
6.3·Suggestion
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Large raw tables disrupt readability; consider summarizing key results and moving detailed data to an appendix to improve report flow.
6.4·Suggestion
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Figure 3.0 and 4.0 axes labels could be more descriptive (e.g., include units or full question text) and error bars explained in captions for complete communication.
6.5·Suggestion
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The individual score matrix is overly dense; split into summary statistics and present raw scores in an appendix to maintain coherence.