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The Scientific Method and Research Practices. Why is Research Important?. Provides new advanced systems and technology in food and agriculture (USDA- REE ) Need to feed the world Research can “improve quantity, quality and sustainability” ( DuPont Agriculture). Types of Research.
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Why is Research Important? Provides new advanced systems and technology in food and agriculture (USDA-REE) Need to feed the world Research can “improve quantity, quality and sustainability” (DuPont Agriculture)
Types of Research Definition • Quantitative • Data includes measurements or counts • Standard scales • Qualitative • Descriptions
Types of Variables Definition • Independent Variables • Altered or manipulated for the experiment • Dependent Variables • Respond during the experiment • Constants • Factors that are not changed during the experiment
Making your Experiment Valid Definition • Control Group • Group Unchanged by researcher • Measure the influence of unanticipated • Multiple Trials
Hypothesis Definition • Prediction of the relationship between a independent and dependent variable in an experiment • Must use background research to form hypothesis • Accept or Reject after analyzing results
Forms of Hypotheses If-Then Non-directional
Hypothesis Example Directional If a plant is exposed to is green light, then the growth rate will increase. Non-Directional • The growth rate of a plant will differ under green light.
Hypothesis Example Directional If cattle are fed corn then the rate of gain will be greater than cattle fed grass. Non-Directional • Rate of gain in cattle fed corn will differ from cattle fed grass.
Procedures and Methods Definition What are procedures? The specific steps used to complete an experiment including the required materials