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Do hand sanitizers decrease a person's risk pf bacterial infection
Scientific Investigation can be tested, measured by asking in questions format.
For example - Do hand sanitizers decrease a person’s risk of a bacterial infection?
Science is more about practicing and conducting than knowing to gain and learn the actual aspect of the world.
This learning can be achieved through Scientific Investigation .
What is Scientific Investigation?
A scientific investigation is a plan for asking questions and testing possible answers in order to advance scientific knowledge. The purpose of Scientific Investigation is testing ideas with evidence.
Real science is nonlinear, iterative (repetitive), creative, unpredictable, Scientists often undertake the steps of an investigation in a different sequence, or they repeat the same steps many times as they gain more information and develop new ideas.
Scientific investigations often raise new questions as old ones are answered and Successive investigations may address the same questions but at ever-deeper levels.
Alternatively, an investigation might lead to an unexpected observation that sparks a new question and takes the research in a completely different direction.
Steps involved in Scientific Investigation are:
- Step 1 - Make Observation
- Step 2 - Ask a question
- Step 3 - Forming hypothesis
- Step 4 - Making prediction based on hypothesis
- Step 5 - Do an experiment to test the prediction
- Step 6 - Analyze the result
- Step 7- Hypothesis is either Correct or Incorrect
- Step 8 - Final result based on Hypothesis
- Step 9- Try again if the given hypothesis is incorrect from Step 4.
Making Observation:
Scientific investigation typically begins with observations that is detected through human senses or with instruments and measuring devices that enhance human senses and also with our sense of touch, smell, taste, or hearing.
In addition, we can extend and improve our own senses with instruments such as thermometers and microscopes.
Hypothesis Formation:
A hypothesis is a possible answer to a scientific question based on scientific knowledge. A hypothesis also must be logical, and it is beneficial if the hypothesis is relatively simple. In addition, to be useful in science, a hypothesis must be testable and falsifiable.
A hypothesis is often expressed in the form of prediction.
Hypothesis Testing:
Hypothesis testing is at the heart of a scientific investigation. Data are essentially just observations which may be measurements in an experiment or just something the researcher notices.
A hypothesis is supported if the actual observations (data) match the expected observations. A hypothesis is refuted if the actual observations differ from the expected observations.
Analyzing the Data:
The data scientists gather raw data which are the actual measurements or other observations that are made in an investigation. Raw data usually must be analyzed and interpreted before they become evidence to test a hypothesis.
To make sense of raw data and decide whether they support a hypothesis, scientists generally use statistics.
Drawing Conclusion:
A hypothesis can never be proven conclusively to be true. Scientists can never examine all of the possible evidence, and someday evidence might be found that disproves the hypothesis.
In addition, other hypotheses, as yet unformed, may be supported by the same evidence.
The more evidence that supports a hypothesis, the more likely the hypothesis is to be correct.
To learn more about Scientific Investigation here
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