EDUR 8131

Educational Statistics 1

**Notes 1: Descriptive Statistics**

**(1) Summary Presentations** (these summaries
are what I would present if in a face-to-face course; detailed presentations are
found below)

- Presentation 1
- Word Document: Descriptive Statistics and Variables Word
- Word Document: Descriptive Statistics and Variables PDF
- Video: Descriptive Statistics and Variables (37 minutes)

- Presentation 2
- Word Document: Hypotheses and Graphical displays Word
- Word Document: Hypotheses and Graphical displays PDF
- Video: Hypotheses and displays (52 minutes)

**(2) JASP Software
**

Data Entry, Descriptive Statistics, Frequencies, and Graphical Output (Summary Presentation Notes 1)

Note: JASP does not provide frequency tables for numbers with decimals; below is a video showing how to make this work in JASP via a math "hack"

Frequencies for numbers with decimals in JASP

**(3) Exercises**

- Central Tendency, Variability, Graphical Displays (with answers)
- Displaying Data (with answers)

**(4) Detailed Presentations** (more detailed presentation than the
summaries presented above)

- Read: Notes 1 Descriptive Statistics, Variables, Hypotheses, and Graphical Displays
- Read:
- Moore et al. text chapters 1, 2, and the section on sampling in chapter 3.
- Also read pages 402-403 (5th edition), 374-376 (6th edition), or 362-364 (7th edition); in the 8th edition, look for section 6.2 Test of Significance (not sure of page numbers).

- Read: Displaying Data (frequency distributions, stem-and-leaf, bar charts, histograms, pie charts, box plots, scatterplots)
- Watch and Read: Instructional Videos and Related Materials
- Supplemental Notes Displayed in Videos
- Supplemental Excel File Displayed in Videos
- Section 1: Descriptive vs. Inferential Statistics (also SPSS data entry explained)
- Section 2: Variables
- Section 3: Scales of Measurement
- Section 4: Types of Variables
- Section 5: (a) Writing Hypotheses
- Section 5: (b) Practice Writing Hypotheses
- Section 5: (c) Common Errors When Writing Hypotheses
- Sections 6, 7, and 8: Central Tendency (also SPSS showing descriptive statistics)
- Section 9: Distributions and Central Tendency
- Section 10: Mean of Groups
- Section 11: Inference and Sampling Error
- Sections 12 and 13: Measures of Variability (also SPSS examples)
- *Section 14: Frequency Distribution and Percentile Ranks (SPSS examples; Supplemental Notes for this video)
- *Section 15, 16, 17: Graphical Displays (SPSS examples)
- Youtube: Videos showing how to create various displays
in SPSS
- Frequencies and Descriptive statistics: https://www.youtube.com/watch?v=XrfQfEwjZA4
- Bar chart: https://www.youtube.com/watch?v=0NeaD1Mojp0
- Histogram: https://www.youtube.com/watch?v=06QOdHv68pM
- Pie Chart: https://www.youtube.com/watch?v=kAhiXaFQLkE
- Scatterplot: https://www.youtube.com/watch?v=pvdCO73S1B0
- Boxplots (Box and whisker): https://www.youtube.com/watch?v=a5HgGlzGc-g
- Looking for others? Just use Google and type "SPSS xxx" where xxx = any type of graph or analysis you want.

- Supplemental Videos
- Averages: On Average, Swedes have 1.99 Legs (4 minutes)
- Pie Chart (Polar Area Display): Showing the Dead: Which is more Deadly, Battlefield or Hospital? (4 minutes)
- Scatterplot: Life Expectancy and Wealth over 200 Years (4 minutes)

- Supplemental Reading and Exercises:
- Variables and scales of measurement (variable/constant; scales; quan./qual.; IV/DV) (practice exercise)
- Hypotheses (directional/nondirectional/null; qual. vs. quan. wording; categories compared; writing; problematic-no difference between IV and DV, qual. IV affects DV [e.g., type of instruction affects DV]) (practice exercise #1, practice exercise #2)
- Overview of things to come; read on your own - Descriptive Statistics and Graphical Displays (correlation coefficients and scatterplots) and Inferential Statistics (practice exercise)