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AQA A-Level Computer Science
3.0 Systematic approach to problem solving
3.5 Evaluation
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Evaluation criteria are the standards used to assess the success of a
solution
Evaluation criteria help determine whether a solution meets its intended
goals
Evaluation criteria for improving website loading speed could include average loading time and
user satisfaction ratings
.
Match the evaluation criteria type with its description and example:
Performance ↔️ Measures how well the solution performs | Average loading time
Usability ↔️ Assesses how user-friendly the solution is | User satisfaction ratings
Cost-effectiveness ↔️ Evaluates the cost relative to benefits | Development cost vs. revenue generated
To gather evidence of problem solution performance, one step is to collect relevant
data
When gathering evidence, quantitative data uses numbers, while qualitative data uses
text
Steps to gather evidence of problem solution performance:
1️⃣ Collect relevant data
2️⃣ Choose appropriate data types
3️⃣ Utilize diverse evidence sources
4️⃣ Compare quantitative and qualitative data
Server logs are an example of a quantitative data source for evaluating
problem solution
performance.
Match the analysis type with its measures and examples:
Quantitative ↔️ Performance, cost, efficiency | Response time, resource usage, cost-effectiveness
Qualitative ↔️ User satisfaction, usability | User surveys, feedback forms, expert reviews
Strengths of a solution highlight its positive aspects, while
weaknesses
identify areas needing improvement.
One weakness of a solution under heavy load might be slow response
times
The assessment of a solution should include performance, usability, cost-effectiveness, scalability, security, and
maintainability
A solution with an intuitive interface is considered highly
usable
Robust security measures in a solution indicate its strength in
security
Match the evaluation criteria type with its description:
Performance ↔️ Measures how well the solution performs
Usability ↔️ Assesses how user-friendly the solution is
Cost-effectiveness ↔️ Evaluates cost relative to benefits
What type of data is used for objective measures in solution evaluation?
Quantitative
Diverse evidence sources for problem solution performance include logs, user feedback, A/B testing, and expert
reviews
Steps to analyze evidence based on evaluation criteria:
1️⃣ Organize evidence into a structured format
2️⃣ Apply quantitative and qualitative analysis techniques
3️⃣ Compare analyzed data against evaluation criteria
4️⃣ Summarize findings
What is an example of a quantitative measure for website performance?
Response time
Qualitative analysis focuses on aspects like user satisfaction and
usability
Quantitative analysis often measures
cost
and efficiency.
What is an example of a qualitative measure for website usability?
User surveys
For a website loading speed solution, qualitative analysis might assess user satisfaction through
surveys
In quantitative analysis, measures like response time are used, while qualitative analysis uses methods like
surveys
Quantitative and qualitative analysis techniques are both used to analyze evidence based on
evaluation criteria
Assessing the strengths and weaknesses of a solution is critical for understanding its overall
effectiveness
Order the key assessment aspects for evaluating a solution's strengths and weaknesses:
1️⃣ Performance
2️⃣ Usability
3️⃣ Cost-effectiveness
4️⃣ Scalability
5️⃣ Security
6️⃣ Maintainability
Match the aspect with its strength for a website solution:
Performance ↔️ High throughput
Usability ↔️ Intuitive interface
Scalability ↔️ Easily handles growth
A solution's security strength may include compliance with industry
standards
Analyzing evaluation data is the first step in identifying areas for
improvement
Order the steps for identifying areas for improvement in a solution:
1️⃣ Analyze evaluation data
2️⃣ Compare against criteria
3️⃣ Define improvement tasks
To analyze evaluation data, review sources such as logs, user feedback, and performance
metrics
Improvement tasks should be aligned with the
evaluation criteria
to ensure effectiveness
To identify areas for improvement, analyze a solution's strengths and
weaknesses
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