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## Scientific Methods Not 1 specific formula ?

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### ... (quantity or amount), descriptions = qualitative data (quality of ... 7. Analyze data Put into tables, charts, ... your data show support ... – PowerPoint PPT presentation

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Title: Scientific Methods Not 1 specific formula ?

1
Scientific MethodsNot 1 specific formula ?
• I. Hypothetical Deductive Method
• many hypothesis (ideas),
• eliminate those without data to support them
• actual experiment(s)
• II. Correlation Method
• multi variable situations
• Use statistics and computer models to compare
data to situations
• ex predict the weather
• Very common

2
Steps in (a) Scientific Method (Hypothetical
deductive)Used more like a flow chart than a list
• Observation
• Curiosity, skepticism, senses/ observations,
experiences
• Question
• Why? , How? , What if?
• 3. Research
• background information , look for an answer,
list all possible explanations, what you already
know
• 4. Hypothesis
• If then therefore statement, cause and
effect, educated guess, prediction, testable/
measurable, explanation on trial claims and
statements

3
Scientific method continued
• 5. Design an Experiment
• Independent variable manipulated
variable
• I/ the scientist manipulate or investigate,
• only 1, the IF..,
• what is being tested/varied/modified/changed by
the researcher,
• x axis
• Dependent variable responding variable
• depends on what I did (independent) plant is
TALLER because of the fertilizer,
• Then, what is measured/changes, y axis
• Controls
• everything you keep the same so that there is
only one independent variable., comparison/ base
line, control group

4
Scientific method continued
• Collect data (during and after experiment)
• numbers and units quantitative data (quantity
or amount),
• descriptions qualitative data (quality
of something)
• 7. Analyze data
• Put into tables, charts, graphs, look for TRENDS
and correlations between Ind.V and Dep. V.,
relationships. Show work, calculations and
formulas
• Either verify or falsify your claim with these
steps retest, restart, restate, re-evaluate
ask more questions and do it again. LOOPS !
• 8. Conclusion
Accept Hypothesis or declare Null Hypothesis.
Explain what happened, what your results were and
where you could improve/change (error analysis is
statistical work done to show the precision of
• Do not say Prove you didnt prove 100
forever, you supported or eliminated, until there
is new evidence
• 9. Repeat/ report/ publish
• Lab report or publication grant money, peer
review, share results, more testing, etc.

5
Assignment this may be done individually or in
collaboration with a partner (BOTH write and
submit)
create a flow chart version of the steps usually
covered in any scientific experiment.
• 2. Read page 29 - 31 and list the steps taken by
Rita Colwell to verify or correlate that water
temperature is an indicator of cholera risk.
(Might loop)
• 3. Choose an article from the red folders
provided and list the steps taken during a
classic experiment (Redi, Lister, Pasteur,
Jenner, etc)

What was the hypothesis or claim? Set up/
control group, procedure Independent
variable, dependent variable, data or results,
Conclusion/ eliminate or support