Notes 1.3
Scientific Process
Research Question
• Observations about
the world around us
help to frame a
question.
– Example: How do
different amounts of
sunshine affect plant
growth?
Background Information
• Research about
similar experiments and
related concepts help
the scientist to develop
the hypothesis and
organize the procedure.
Hypothesis
• Hypothesis = a preliminary answer
to the research question . . . It is
based on observations and
background research. It must be
testable.
• The hypothesis is often stated:
“If. . .then. . . because..” form.
Procedure
• The procedure= a list of
specific steps to conduct the
experiment.
– Independent variable (IV) =
the one condition changed
by researcher
– Dependent variable (DV) =
the condition that changes as
a result of the independent
variable.
(condition being observed & measured)
Procedure continued….
•Control- The trial where the
IV is not changed.
•Constants- All of the other
conditions held constant during
the experiment.
•Trials – The number of times
the experiment is performed
•Sample Size – The number of
subjects tested or trials run
Data
• Data is often
displayed in table &
graph form. . . It may
be numerical or
behavioral data.
– Tables first
– Graphs second
0
50
100
1st
Qtr
3rd
Qtr
East
West
North
Body
position
Trial 1 Trial 2 Mean
Flat
Right
side
Left side
Data Tables
Data Table Title (IV/DV)
Independent
Variable
Dependent
Variable Trial 1
Dependent
Variable Trial 2
Dependent
Variable Trial 3
Calculated
Value
Level One
Level Two
Level Three
Conclusions
• Conclusions either
support or reject the
hypothesis.
• Data must be cited to
support the
conclusion.
Publishing
–Information from the study
should be shared with
others using:
– scientific journals
– poster presentations
– web sites
Experimental Scenario
I would like to test the effects of varying coffee
ground concentrations (0%, 10%, 20%) as
fertilizer on the growth in height in cm of my
three Japanese Maple trees over six months.
• What would I want to keep constant?
• What is my independent variable?
• What is my dependent variable?
• What is my control?
• Are there Multiple Trials?

Scientific Processes

  • 1.
  • 2.
    Research Question • Observationsabout the world around us help to frame a question. – Example: How do different amounts of sunshine affect plant growth?
  • 3.
    Background Information • Researchabout similar experiments and related concepts help the scientist to develop the hypothesis and organize the procedure.
  • 4.
    Hypothesis • Hypothesis =a preliminary answer to the research question . . . It is based on observations and background research. It must be testable. • The hypothesis is often stated: “If. . .then. . . because..” form.
  • 5.
    Procedure • The procedure=a list of specific steps to conduct the experiment. – Independent variable (IV) = the one condition changed by researcher – Dependent variable (DV) = the condition that changes as a result of the independent variable. (condition being observed & measured)
  • 6.
    Procedure continued…. •Control- Thetrial where the IV is not changed. •Constants- All of the other conditions held constant during the experiment. •Trials – The number of times the experiment is performed •Sample Size – The number of subjects tested or trials run
  • 7.
    Data • Data isoften displayed in table & graph form. . . It may be numerical or behavioral data. – Tables first – Graphs second 0 50 100 1st Qtr 3rd Qtr East West North Body position Trial 1 Trial 2 Mean Flat Right side Left side
  • 8.
    Data Tables Data TableTitle (IV/DV) Independent Variable Dependent Variable Trial 1 Dependent Variable Trial 2 Dependent Variable Trial 3 Calculated Value Level One Level Two Level Three
  • 9.
    Conclusions • Conclusions either supportor reject the hypothesis. • Data must be cited to support the conclusion.
  • 10.
    Publishing –Information from thestudy should be shared with others using: – scientific journals – poster presentations – web sites
  • 11.
    Experimental Scenario I wouldlike to test the effects of varying coffee ground concentrations (0%, 10%, 20%) as fertilizer on the growth in height in cm of my three Japanese Maple trees over six months. • What would I want to keep constant? • What is my independent variable? • What is my dependent variable? • What is my control? • Are there Multiple Trials?