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Course Nr.: 0403111 STATISTICS Course The course introduces students to the discipline Description: of Statistics as a science of understanding and analyzing data. The goals of this course are as follows: Recognize the importance of data collection and determine how they affect the scope of inference. Use statistical packages in R-Studio to summarize data numerically and visually, and to perform data analysis. Have a conceptual understanding of the unified nature of statistical inference. Apply estimation and testing methods (confidence intervals and hypothesis tests) to analyze single variables and the relationship between two variables in order to understand natural phenomena and make data-based decisions. Model and investigate relationships between two or more variables within a regression framework. Complete practical assignments that employ simple statistical inference and modelling techniques. Text Book: Introductory Statistics with Randomization and Simulation David M. Diez, Christopher D. Barr, Mine Catinkaya-Rundel, 1st Ed (2014) Lecture summaries and presentations: www.alveronika.wordpress.com Page Statistics Tafila Technical University College of Business Dept. of Economics 2nd Semester 2016/2017 Lecturer: Dr. Veronika Alhanaqtah Office Hours: Monday, Wednesday 9:30 – 11:00 (office 347) Software: R/R Studio (free resource) Evaluation Official website: https://cran.r-project.org Nr. 1st Exam (20 Marks): March 9 2nd Exam (20 Marks): April 20 Final Exam (50 Marks) Laboratory Assignments (10 Marks) Main Topic 0 Introduction 1 Introduction to data Sub-Topic What Statistics is about Course requirements 1.1. Introductory concepts and vocabulary 1.1.1. Data Set. Unit of observation 1.1.2. Variable. Variable types 1.1.3. Online data libraries 2 Descriptive statistics: Univariate analysis 2.1. One variable graphics and number summaries 2.1.1. Histogram. Symmetric and asymmetric distribution 2.1.2. Box plot. Number summaries: minimum, 25th, 50th, 75th percentiles, maximum. Outlier. Boundary fence 2.2. Measures of central tendency and variability 2.2.1. Center: median, mean, mode 2.2.2. Spread: range, inter-quartile range (IQR), standard deviation (SD), skewness, kurtosis 2.3. Transformation and standardizing 2.3.1. Mathematical transformations 2.3.2. Standardizing (Z-score) 2.4. Normal distribution 2.4.1. Bell-shaped distribution 2.4.2. Empirical rule 2.4.3. Standard normal probabilities 2.4.4. Chebyshev’s theorem First Exam 3 Descriptive statistics: Bivariate analyses 3.1. Relationship between two categorical variables - Mosaic Plots and Contingency Tables 3.2. Relationship between one categorical and one numeric variables – Side-by-side boxplots 3.3. Relationship between two numeric variables – Correlation and Regression 4 Inferential statistics: foundations 4.1. 4.2. 4.3. 4.4. 4.5. 4.6. 4.7. Simple linear regression The linear correlation coefficient Modeling linear relationships with randomness present The least squares regression line Statistical inferences about β2 The coefficient of determination Estimation and prediction Second Exam 5 Theory of probability 5.1. Numerical characteristics of random variables 5.1.1. Types of averages Simple arithmetical average Weighted arithmetical average Geometric average Chronological average Harmonic average 5.1.2. Expected value 5.1.3. Variance 5.1.4. Standard deviation 5.1.5. Covariance 5.1.6. Covariance matrix 5.1.7. Correlation coefficient 5.2. Events and probabilities (additional) 5.3. Probability distributions (additional) Laboratory Assignments in computer classes (R/R-Studio): in the course of a semester Final Exam