QCM : Fundamentals of Scientific Inquiry — 7 questions

Questions et réponses du QCM

1. What is a primary cause of obtaining valid and reliable results in a scientific investigation?

Having a large sample size to increase statistical power
Controlling all variables except the independent variable
Using advanced technology for data collection
Repeating experiments multiple times to confirm findings

Controlling all variables except the independent variable

Explication

Controlling all variables except the independent variable ensures that any observed effects are due solely to the manipulated factor, which is essential for obtaining valid and reliable results in a scientific investigation.

2. Who is credited with developing the foundational principles of controlling variables and randomization in experimental design?

Galileo Galilei
Ronald A. Fisher
Francis Bacon
Isaac Newton

Ronald A. Fisher

Explication

Ronald A. Fisher is widely credited with formalizing the principles of experimental design, including the concepts of controlling variables and randomization, which are fundamental to conducting valid and reliable experiments.

3. What is the primary role of data collection in the process of data analysis?

To control variables within an experiment
To formulate hypotheses based on initial observations
To create visual representations of data for presentation
To gather information that can be examined to draw conclusions

To gather information that can be examined to draw conclusions

Explication

The primary role of data collection is to gather raw data that can then be analyzed to draw conclusions, identify patterns, or inform decisions. Visualization and hypothesis formulation are subsequent steps that rely on data collection, but their roles are not the core function of collecting data itself. Controlling variables is part of experimental design, not the fundamental purpose of data collection.

4. When was the systematic control of variables in experiments first formally established as a key component of scientific methodology?

In ancient Greece with the philosophical foundations of science
In the mid-19th century during the formalization of experimental design
In the 20th century with the advent of modern statistical methods
During the late 17th century with the development of early scientific experiments

In the mid-19th century during the formalization of experimental design

Explication

The formalization of controlling variables in scientific experiments became a key part of experimental design during the mid-19th century, as scientists began standardizing methods to ensure reliable and valid results. While early experiments in the 17th century began to recognize the importance of controlling factors, it was not until the 19th century that systematic procedures and formal principles for controlling variables were established and widely adopted in scientific methodology.

5. What is the primary purpose of applying statistical tests in hypothesis testing?

To design experiments and control variables effectively
To collect qualitative data during experiments
To visually represent data through charts and graphs
To evaluate whether the experimental results support or refute the hypothesis

To evaluate whether the experimental results support or refute the hypothesis

Explication

Statistical tests are used in hypothesis testing to analyze data and determine whether the results support or contradict the hypothesis, providing an objective basis for conclusions.

6. How should a researcher best apply their understanding of results interpretation to determine the validity of their experimental findings?

Use intuition to decide whether the data supports the hypothesis without detailed analysis
Look for consistent patterns and relationships in the data while considering possible errors and anomalies
Rely solely on the visual appeal of graphs and charts without analyzing the underlying data
Ignore unexpected data points if they contradict the hypothesis to maintain focus on supporting evidence

Look for consistent patterns and relationships in the data while considering possible errors and anomalies

Explication

The correct approach involves carefully analyzing the data for consistent patterns and relationships, while also critically evaluating any errors or anomalies, to draw valid conclusions about the experiment's results.

7. What does reporting findings in scientific research primarily involve?

Organizing and presenting research results clearly and accurately
Designing experiments to test a specific hypothesis
Formulating new hypotheses based on data collected
Collecting qualitative and quantitative data from experiments

Organizing and presenting research results clearly and accurately

Explication

Reporting findings mainly involves organizing and presenting research results in a clear, accurate, and structured manner. This process ensures that others can understand and evaluate the research outcomes. The other options relate to different steps in the scientific method, such as hypothesis formulation, experimental design, and data collection, but do not define what reporting findings is.

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Mémorisez les réponses avec 14 flashcards sur Fundamentals of Scientific Inquiry.

Scientific method — first step?

Observation of phenomena.

Experimental design — purpose?

Test hypotheses systematically.

Data collection — types?

Qualitative and quantitative.

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