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Statistics for Biology

  • Login
  • What are Statistics?
    • Biological hypotheses vs. statistical hypotheses
    • Null and alternative hypotheses
    • Steps in a hypothesis test
    • Understanding p-values
    • Effect size
    • Sample Size
    • Conclusions
  • How to Display Data
    • Types of Variables
    • Types of graphs
      • Formatting Graphs
      • Bar graph
      • Scatter plot
      • Box plot
      • Frequency histogram
    • Example Figures
      • Figure for lab experiment
      • Figure for Field Study
      • Tables
  • Descriptive Statistics
    • Measures of Center
      • Mean
      • Median
      • Mode
    • Variation
      • Standard deviation
      • Standard error
    • Confidence Intervals
    • Distributions
  • Statistical Tests
    • Installing data analysis toolpak in Excel
    • Two-sample t-test
    • Chi-square test
    • ANOVA
    • Simple linear regression
  • Contributors
  • Introductory Biology Trail Camera Project
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Example Figures

students doing stream sampling

Figure for Field Study

From Zhang et al. 2018

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students viewing ciliates

Figure for lab experiment

From Jackson and Semlitsch 1993

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students adding treatment to plant stress experiment

Tables

Tables are from Andrew et al. 2018 and Rodtassana and Tanner 2018

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©Thea Kristensen and Amy Wagaman 2018, Amherst College

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