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Data, Tables & Graphs

Data, Tables & Graphs. October 24, 2016 BIOL 260 Handbook of Biological Investigation Ch. 3, 4, 5, 7. Turn in Worksheet #8 Turn In Final Topic title form. Guests Today. Mrs. Holshouser from AP Biology class Bartlett Yancey High School. Scientific Method.

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Data, Tables & Graphs

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  1. Data, Tables & Graphs October 24, 2016 BIOL 260 Handbook of Biological Investigation Ch. 3, 4, 5, 7

  2. Turn in Worksheet #8 Turn In Final Topic title form

  3. Guests Today • Mrs. Holshouser from AP Biology class • Bartlett Yancey High School

  4. Scientific Method • Once you have a hypothesis you should start thinking about the types of data that you will collect. • Variable: characteristic that differs in a group. • What type of scale will we use to measure the variable?

  5. Types of Data

  6. Types of Data

  7. Scales of Measurement 7 8 3 Discrete Data Continuous Data

  8. Organizing collected data • Plot data on bar graph to determine frequency. • What is the distribution? Characterizing the data as a whole.

  9. Central Tendencies of data • Plot data on bar graph to determine frequency. • What are tendencies? Characterizing single points that make up data: what normally happens. MEAN: numerical average MEDIAN: middle value in distribution MODE: most frequently occurring value

  10. Dispersion of data • Plot data on bar graph to determine frequency. • What are tendencies? What is happening outside of central tendencies? RANGE: difference between highest and lowest value STANDARD DEVIATION: distance between mean and point of inflection VARIANCE: how are data points grouped (ex. clustered or not) SD2

  11. Normal Distribution 99.6% What is stdev? Calculator or know formula 95.4% 68.2%

  12. Statistical analysis of data • Descriptive Trend, tendencies, statistics • Correlation Regression = strength of relationship

  13. Difference in distribution

  14. Difference in Means

  15. Difference in variability

  16. 1. Where is this data recorded?2. What happens to the data3. How you do choose what data goes into an article?

  17. Precision Vs. Accuracy • Why does it matter? • What is the difference? • Which term do you want to describe your data?

  18. The authors collected data on the activity of the enzyme creatinine deiminase in two species of bacteria to determine if activity was increased by various nitrogen sources

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