Module Outline Module 3: Psychology’s Statistics Module 3 provides a brief summary of statistics used by researchers in psychology. It begins by explaining how statistics are used in psychology. Frequency distribution, measures of central tendency, and measures of variation are explained. The normal curve (normal distribution) is explained along with comparative statistics. How to interpret both positive and negative correlations are discussed. The text concludes with a brief description of inferential statistics and statistical significance.
 Introduction Statistics Frequency Distribution Frequency distribution Measures of Central Tendency Measures of central tendency Mode Mean Median Skewed Measures of Variation Measures of variation Range Standard deviation Normal Distribution Normal distribution Normal curve Bell-shaped curve Comparative Statistics Percentage Percentile rank Correlation Coefficient Correlation coefficient Positive correlation Negative correlation Scatterplot Statistical Inference Descriptive statistics Inferential statistics Statistically significant