Quantitative DataBiology 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 Mean

Median

Mode

Frequencies

Inferential Sample /Population

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

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

Sta

tistic

al D

ecis

ion

Tre

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