STATISTICS:   Class Notes

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Prof.  G. Battaly, Westchester Community College, Valhalla NY  (updated 11/03/2021)
 All links with *** are videos

     Test #1 Preparation            Test #2 Preparation 
    ***Importance of Textbook***
    Submitting Material through Blackboard
Chapter 1  

Nature of Statistics         Ch 1 questions  

Chapter 2  

2.1 - 2.2 Organizing Qualitative Data  

    ***2.1 Variables*** |  ***2.2 Organizing Qualitative Data***
      2.3 Organizing Quantitative Data      student height excel file
    ***2.3 Organizing Quantitative Data ***
    ** dotplot **        ** stem & leaf **
      2.4 - 2.5 Distribution Shapes
    ** Shapes of Distributions **  ** Misleading Graphs **
Chapter 3   3.1 Measures of Center
    **3.1 Measures of Center **     **3.1 Center-Part2 **
    3.2 Measures of Variation
    **3.2 Standard Deviation-Background **    
**3.2 Stdev Compute **
    3.4 Five Number Summary; Box Plot
    **3.4 Quartiles, 5Number Sum **     **3.4 Boxplot **
    3.5 Samples, Populations, and z-scores
    ** Formula Summary, z-score **
Chapter 4   4.1 Probability Basics
    ** 4.1 Probability **
    4.2 Events
    ** 4.2 Events **
    4.3 Probability of Events
    ** 4.3 Rules of Probability **
    4.4&5 Contingency Tables; Conditional Probability
    4.6 Independence
Chapter 6   Normal Curvegeogebra demo
    Area under Normal Curvegeogebra demo
    Normal Distribution and the SNC**video of geogebra demo
    6.1 Normal Distribution
    ***6.1 Normal Distributions-Part 1***
***6.1 Normal Distributions-Part 2*** |
    6.2 Area under Standard Normal Curve
    ***6.2 Area under Normal Curves-Part 1***
***6.2 Areas under Normal Curves-Part2***
***6.2 Given Area, Find z or x***
    6.3 Normally Distributed Variables
    ***6. Normall Distributed Variables***
    6.4 Normal Probability Plots
    ***6.4 Normal Probability Plot***
Chapter 7   7.1 Sampling Distribution Of Mean
    ***7.1 Sample Mean - Heights***
***7.1 Sample Mean - Yankees*** |
    7.2 Mean and Standard Deviation of Sample Mean
    *** 7.2 Distribution of the Sample Mean***
    7.3 Sample Mean and Normal Distribution
    ***7.3 Sample Mean and Normal Distribution***
    *****Video: PANDEMIC REVIEW*****
Chapter 8   8.1 Point Estimate and CI
    *** 8.1 Point Estimate and Confidence Interval ***
    8.2A Confidence Interval, Known Standard Deviation
             : ***  8.2 Z-interval Part 1 *** 
           ***  8.2 Z-interval Part 2 ***
    8.2B Margin of Error and Sample Size
***:8.2 Margin of Error,Sample Size***
*** :8.2 Sample Size, 8.3 t-curve ***
    t-Curve comp. to SNC  geogebra demo with animation
    8.3 Confidence Interval, Standard Deviation NOT known
    *** :8.3 t-Interval ***
Chapter 9   9.1 Hypothesis Testing
    *** 9.1 Hypothesis Tests, 9.3 P-Value, 9.4 z-test ***
      9.1 Hyp Tests, 9.3 P-Value, 9.4 ztest, 9.5 t-testl -pdf
    9.2 & 9.3 Critical Value vs P-Value Approach
               p-Value and Science, 2019
    9.4 Hypothesis Test:  1 mean, σ known
    9.5 Hypothesis Test:  1 mean, σ NOT known
                   ***Video: 9.5 t-test ***
Chapter 10     NEW   Chapter 10 Content   NEW
    10.1-10.3 Two Means: Pooled-t and Non-pooled t Overview
    ***10.1-10.3 Compare Pooled-t and Non-pooled t***
    10.1 Hypothesis Tests Comparing Two Means
    10.2 Pooled t Test (equal σs)
     **Video: 10.1 2 sample tests, 10,2 pooled t Test (equal σs)**
               **Video: 10,2 pooled t Test continued**
    10.3 Non-Pooled t Test (font face="Arial">σs NOT equal )
                 **Video: 10,3 NON-pooled t Test**
    Hypothesis Testing Puzzle
    10.4 Mann-Whitney Test
                   **Video: 10,4 Mann-WhitneyTest**
    10.5 Paired t - Test
      **Video: 10,5 Paired-t Test**  **10,5 Paired-t Continued**
      **Video: 10,5 Paired-t Test Extra Problem** 
    Two Sample Procedure Practice Sheet
Chapter 13   Chi-Square Distribution  geogebra demo with animation
    13.1&13.2 Chi-Square Tests
          **Video: 13.1 and 13.2 Chi-Square Test** 
    13.4 Chi-Square Independence
Chapter 14   Linear Regression  geogebra demo
    14.2 Linear Regression Equation 
             ***Video: Ch 14 Intro to Regression*** 
          ***Video:  14.2 Linear Regression***
                geogebra example: prediction
    14.3 Coefficient of Determination 
     ***Video: 14.3 Coef of Determination, 14.4 Correlation*** 
    14.4 Correlation Coefficient  
Chapter 15 15.4 Inferences in Correlation
              ***Video:  15.4 Correlation-t Test*** 
Chapter 16          F-Distribution geogebra demo with animation
    16.1-16.3 ANOVA
                  ***Video: 16.3 ANOVA*** 
                  ***Video: ANOVA-Table Only *** 
Chapter 11   11.2 Comparing Two Standard Deviations
Review   Which Procedure?

Last Updated   04/18/2020
By Prof. Battaly, http://www.battaly.com/
Email: merlin@pipeline.com