Sample Answer Overall Score: 7.0
The table illustrates the cost per kiloliter of water and the average household water expense in five major Australian cities: Adelaide, Brisbane, Melbourne, Perth, and Sydney.\n\nOverall, the cities show a trend where water costs increase as consumption exceeds 125 kiloliters, with every city except Melbourne having average expenses over $300. Melbourne, in contrast, maintains a lower average at approximately $250.\n\nIn terms of cost-effectiveness, both Adelaide and Perth offer water at $0.42 per kiloliter for consumption below 125 kiloliters. However, Adelaide sees a significant price jump to $1 per kiloliter when consumption increases, unlike Perth, which maintains the same rate. Although Melbourne's average price per kiloliter is higher at $0.78, its aggregate household water expense remains the lowest among the compared cities.\n\nBrisbane witnesses a slight increase in water cost by $0.03 when usage increases, while Sydney features the highest rates at $0.98 per kiloliter, correlating to the highest average water expenditure of approximately $319.
Summary of the Key Improvements
1. Task Achievement
- Provided clearer and more detailed comparative analysis.
- Included precise data and context for better clarity.
2. Coherence and Cohesion
- Enhanced the logical flow between statements.
- Used a more structured approach to improve reader’s understanding.
3. Lexical Resource
- Utilized a broader range of vocabulary.
- Avoided repetitive words and corrected typographical errors.
4. Grammatical Range and Accuracy
- Minimized grammatical errors.
- Used complex structures more accurately for better precision.
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