scientific process methods

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Scientific Process METHODS Question to Experimental Design to Data Analysis

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Scientific Process METHODS. Question to Experimental Design to Data Analysis. Question. I will examine if ….. I predict ………. The objective of this study is to show …. ********** affects *********** this way. treatment. response. Question. I will examine if ….. I predict ………. - PowerPoint PPT Presentation

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Page 1: Scientific Process METHODS

Scientific ProcessMETHODS

Questionto

Experimental Designto

Data Analysis

Page 2: Scientific Process METHODS

QuestionI will examine if …..I predict ……….The objective of this study is to show …

********** affects *********** this waytreatment response

Page 3: Scientific Process METHODS

QuestionI will examine if …..I predict ……….The objective of this study is to show …

********** affects *********** this waytreatment response

Determines how to organize the

experiment

Determines what to measure

Page 4: Scientific Process METHODS

Experimental Context

chemistryphysics

geneticspsychology

animal behaviorvirologydisease

ecologysociologyeducationastronomy

Page 5: Scientific Process METHODS

Experimental Context

chemistryphysics

geneticspsychology

animal behaviorvirologydisease

ecologysociologyeducationastronomy

LABORATORY FIELD

Page 6: Scientific Process METHODS

Experimental Context

chemistryphysics

geneticspsychology

animal behaviorvirologydisease

ecologysociologyeducationastronomy

LABORATORYmore control

FIELDmore realistic

Page 7: Scientific Process METHODS

Experimental Context

chemistryphysics

geneticspsychology

animal behaviorvirologydisease

ecologysociologyeducationastronomy

LABORATORYmore control

FIELDmore realistic

human subjectmore realistic

animal modelmore control

Page 8: Scientific Process METHODS

EXPEIMENTAL TRADE-OFFS

• generality versus confidence

• realism versus control

• replication versus cost

• complexity versus control and cost

Page 9: Scientific Process METHODS

Experimental Design

• Control

• Random sampling

• Replication

• Sample size

Page 10: Scientific Process METHODS

Experimental Design

• Control– provide a comparison

• Random sampling

• Replication

• Sample size

Page 11: Scientific Process METHODS

Experimental Design

• Control– provide a comparison

• Random sampling– avoid bias– representative sample

• Replication

• Sample size

Page 12: Scientific Process METHODS

Experimental Design

• Control– provide a comparison

• Random sampling– avoid bias– representative sample

• Replication– control for unknown variables– quantify variance

• Sample size

Page 13: Scientific Process METHODS

Experimental Design

• Control– provide a comparison

• Random sampling– avoid bias– representative sample

• Replication– control for unknown variables– quantify variance

• Sample size– increase power

Page 14: Scientific Process METHODS

Refine the research objective

Page 15: Scientific Process METHODS

Refine the research objective

Determine Treatment(s)• one treatments with control• multiple treatments‘ with control• gradient of treatments with control

Page 16: Scientific Process METHODS

Refine the research objective

Determine Treatment(s)• one treatments with control• multiple treatments' with control• gradient of treatments with control

Determine Response(s)• number of responses• measured versus counts• what the data will ‘look’ like

Page 17: Scientific Process METHODS

Refine the research objective

Determine Treatment(s)• one treatments with control• multiple treatments' with control• gradient of treatments with control

Determine Response(s)• number of responses• measured versus counts• what the data will ‘look’ like

Determine Appropriate Analysis• number of treatments• nature of the data• question asked

Page 18: Scientific Process METHODS