Sampling and Descriptive Statistics Introductory Statistics Using SPSS (Chapter 2 – Sampling) Sampling approaches: how to achieve representativeness. Survey Research and Sampling Introductory Statistics Using SPSS (Chapter 4 – Descriptive Statistics) Descriptive Statistics and Normal Distribution Videos Standard Deviation and Variance Tutorial Normal Distributions, Standard Deviations, Modality, Skewness Descriptive Statistics using SPSS Grand mean and group mean centering using SPSS Descriptive Statistics (24 videos) Descriptive Statistics (13 videos)