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Quantitative Data

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Quantitative Data. Biology Scholars – 2010 Reflections from a Developmental Biologist. Research Design. Experimental vs. Correlational Selecting independent and dependent variables Choosing a design Selecting the appropriate statistical test. Statistics. Descriptive. Inferential. - PowerPoint PPT Presentation
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Quantitative Data Biology Scholars – 2010 Reflections from a Developmental Biologist
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Page 1: Quantitative Data

Quantitative DataBiology Scholars – 2010

Reflections from a Developmental Biologist

Page 2: Quantitative Data

Research Design

Experimental vs. Correlational

Selecting independent and dependent variables

Choosing a design

Selecting the appropriate statistical test

Page 3: Quantitative Data

Statistics

Descriptive Mean

Median

Mode

Frequencies

Inferential Sample /Population

Does the relationship in the sample exist in the population? Means Relationships Categorical Data

Page 4: Quantitative Data

Categorical Data?

Surveys or Experiments

Captures qualities or characteristics about the individual, such as a

person's eye color, gender, political party, or opinion on some issue.

Page 5: Quantitative Data

Significance?

p-values

Any difference is due to either Chance Treatment effect

Measures how likely any difference is due to chance

95% confidence interval < or > 0.05

Difference between means

Variability

Sample size

Page 6: Quantitative Data

Sta

tistic

al D

ecis

ion

Tre

e


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