BCB744 Biostatistics Exam – Assessment Template

Author

Affiliation

Smit, A. J.

University of the Western Cape

Student Information

• Student Name: _________________________
  
• Student ID: _________________________

I. Task-by-Task Assessment & Scoring

Task 1: Initial Processing (Weight: 10%)

Components:

• 1.1: Reading NetCDF
  
• 1.2: Restructuring Data

Scoring Scheme (per component):

• Correct output shown: assign 100
  
• Penalty: Incorrect variable naming (max -30): _____
  
• Penalty: Poor presentation or formatting (max -20): _____

Task Summary:

• Average Task 1 Raw Score (0–100): _____
  
• Task 1 Weighted Score (/10): _____
  
• Final Task 1 Score (× 0.10): _____

Narrative Feedback (Task 1):

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Task 2: Exploratory Data Analysis (Weight: 10%)

Component 2.1: Weighted Mean Time Series (Two Parts)

• 1. Correct summary plot for weighted mean time series: assign 35
     
  • Penalty: Missing year × quarter aggregation (max -10): _____
    
  • Penalty: No exclusion of passes = 0 or area = NA (max -10): _____
    
  • Plot correctness: assign 15
    
  • Penalty: Poor formatting (max -10): _____
• 2. Correct pixel-level temporal analysis: assign 35
     
  • Penalty: Fewer than 100 samples (max -10): _____
    
  • Penalty: Missing year × quarter × pixel structure (max -10): _____
    
  • Plot correctness: assign 15
    
  • Penalty: Poor formatting (max -10): _____

Component 2.1 Score (0–100): _____

Component 2.2: Summary Statistics & Visualisations

• 1. Statistical summaries: assign 50
     
  • Penalty: Incorrect grouping (max -15): _____
    
  • Interpretation quality: (max 20): _____
• 2. Plotting: assign 30
     
  • Penalty: Poor formatting (max -20): _____

Component 2.2 Score (0–100): _____

Component 2.3: Observation Density Map

• Plot correctness: assign 100
  • Penalty: Poor formatting (max -50): _____

Component 2.3 Score (0–100): _____

Task Summary:

• Average Task 2 Raw Score (0–100): _____
  
• Task 2 Weighted Score (/10): _____
  
• Final Task 2 Score (× 0.10): _____

Narrative Feedback (Task 2):

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Task 3: Inferential Statistics – Part I (Weight: 20%)

Components:

• 3.1: Hypothesis Structure: Raw Score: _____
  
• 3.2: Model Choice & Implementation: Raw Score: _____
  • Penalty: Overcomplication not justified (e.g., unmotivated LMMs): _____
    
• 3.3: Justification & Assumptions: Raw Score: _____
  
• 3.4: Interpretation & Presentation: Raw Score: _____
  • Penalty: Poor writing or code/text blending: _____

Task Summary:

• Average Task 3 Raw Score (0–100): _____
  
• Final Task 3 Score (× 0.20): _____

Narrative Feedback (Task 3):

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Task 4: Assigning Kelp Observations (Weight: 20%)

Components:

• 4.1: Coastal Sections Assignment (70% of Task 4): Raw Score: _____
  
• 4.2: Biogeographical Provinces Assignment (30%): Raw Score: _____

Weighted Average Task 4 Score:

• ( + ): _____

Final Task 4 Score (× 0.20): _____

Narrative Feedback (Task 4):

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Task 5: Inferential Statistics – Part II (Weight: 30%)

Components:

• 5.1: Section-wise Differences: Raw Score: _____
  • Bonus: TukeyHSD (+5): _____
    
  • Penalty: Overcomplicated method (e.g., unmotivated LMM): _____
    
• 5.2: Province-wise Differences: Raw Score: _____
  • Bonus: TukeyHSD (+5): _____
    
  • Penalty: Overcomplicated method: _____
    
• 5.3: Interaction (Section × Province): Raw Score: _____
  • Penalty: Overcomplicated method: _____
    
• 5.4: Temporal Trend by Province: Raw Score: _____
  • Penalty: Overcomplicated method: _____
    
• 5.5: Seasonal Variability across Provinces: Raw Score: _____
  • Penalty: Overcomplicated method: _____

Task Summary:

• Average Task 5 Raw Score (0–100): _____
  
• Final Task 5 Score (× 0.30): _____

Narrative Feedback (Task 5):

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Task 6: Final Write-up (Weight: 10%)

Scoring Scheme:

• Clarity & Communication (report organisation, flow, language): _____ /70
  
• Critical Thinking (limitations, implications, insight): _____ /30
  
• Penalty: AI-generated text (-50%) or similar issues: _____

Total Task 6 Score (after deductions): _____
Final Task 6 Score (× 0.10): _____

Narrative Feedback (Task 6):

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II. Final Mark Calculation

Task	Weighted Score
Task 1	_____ / 10
Task 2	_____ / 10
Task 3	_____ / 20
Task 4	_____ / 20
Task 5	_____ / 30
Task 6	_____ / 10
Subtotal	_____ / 100

Global Penalties

• Formatting / Document Structure (-0 to -15%): _____
  • Reason: ____________________________________________
    
• Excess Output (-0 to -15%): _____
  • Reason: ____________________________________________

Total Global Penalty (%): _____ (max 40%)
Final Exam Mark: _____ %
> Calculation: Subtotal × (1 - Penalty % / 100)

III. Assessor Summary & Recommendations

• Strengths:

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• Weaknesses:

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• Recommendations for Improvement:

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