Data Interpretation (Cambridge (CIE) AS Environmental Management): Revision Note

Interpreting Data

• Understanding and interpreting data is crucial for a successful experiment

  • It helps confirm if your findings agree or disagree with your initial hypothesis

• This process gives meaning to the information or data that has been collected and helps identify why it's important

  • Sometimes, the data might only partially support the initial hypothesis

Scientific Method Limitations

• Scientific experiments and investigation often present challenges that make it tough to get reliable data

  • These challenges come from things like how the research is set up, the materials used, the methods followed, and dealing with limited time and money

  • Common problems include issues with the sample, its size, and difficulties with the tools, instruments or methods used for collecting information

  • These factors can all contribute to unreliable data and uncertainty in the results

  • Limitations of environmental research can include:

    • Challenges accessing remote or hazardous locations for repeated data collection

    • Unpredictable weather

    • The difficulties of sorting and organising samples when out in the field

• It's important that scientists clearly communicate the challenges they face during their research and suggest ways to improve or fix them

• Other challenges to collecting reliable data can include:

  • Human error: when the researcher makes mistakes e.g. miscounting the number of oxygen bubbles produced by an aquatic plant as photosynthesis occurs

  • Researcher bias: scientists might expect a certain answer and focus only on that, which can make them miss other information that could give a different result - being aware of and reducing these biases is crucial for fair and accurate science

Scientific Theory

• A robust scientific hypothesis, backed by substantial data, can progress into a scientific theory

  • For example, the initial hypothesis that deforestation reduces biodiversity has now evolved into a theory with a huge amount of supporting evidence

• Theories serve as the basis for predictive models, enabling scientists to predict outcomes in different environmental scenarios

  • For example, theories about habitat size and fragmentation can now help environmental scientists to predict the consequences of continued deforestation on biodiversity

• It is important to note that scientific theories are not fixed

  • They have the flexibility to adjust and transform as new data emerges

  • This adaptability ensures that theories stay accurate, reflecting the latest understanding of environmental processes