20354 - STATISTICS AND DATA ANALYSIS - PREPARATORY COURSE
Department of Decision Sciences
Course taught in English
RAFFAELLA PICCARRETA
Class 1: ALESSANDRO RECLA
Suggested background knowledge
Mission & Content Summary
MISSION
CONTENT SUMMARY
The course is articulated as follows:
- Descriptive analysis of a data set.
- Data collection, organizing data in tables, graphical presentation methods.
- Measures of central and non central tendency, measures of variation.
- Shape of a distribution. Outliers and extreme values.
- Tabulating and graphing bivariate data.
- Measures of association and of dependence (association and independence-contingency coefficient mean dependency, linear relationships; covariance, correlation coefficient).
- Simple linear regression. Some basic concepts on multiple regression analysis are also illustrated.
- Probability theory and Random variables.
- Experiments, sample spaces and events. Definition of probability and rules of probability. Conditional probability and independent events.
- Random variables: discrete and continuous.
- Inferential statistics
- Sample and Sampling distribution. Descriptive versus Inferential Statistics.
- Point and confidence interval estimation
- Fundamentals of Hypothesis Testing. Hypothesis test for association (chi-square and correlation). Test for equality of the means (ANOVA). Tests on coefficients in regression models.
- Introduction to R/RStudio
Intended Learning Outcomes (ILO)
KNOWLEDGE AND UNDERSTANDING
- Recognize different types of data.
- Understand the difference between the tools of descriptive and inferential statistics, and identify the most suitable approach for the problem at hand.
- Recognize simple statistical models.
- Understand the structure and the functioning of the statistical software R/RStudio
APPLYING KNOWLEDGE AND UNDERSTANDING
- Properly summarize a dataset.
- Interpret the results obtained by applying simple statistical models, as regression models, to study the relationships between variables of interest.
- Create simple objects and use basic functions in R/RStudio to describe data
Teaching methods
- Practical Exercises
DETAILS
The course is articulated into online asynchronous classes. For selected topics online tests are available on Bboard, to allow an immediate feedback on the level of knowledge and understanding of the illustrated concepts and techniques.
In addition, some online synchronous sessions are planned (in September and in January) to allow students to discuss about their doubts and to have clarifications on specific topics.
Assessment methods
| Continuous assessment | Partial exams | General exam | |
|---|---|---|---|
|
x |
ATTENDING AND NOT ATTENDING STUDENTS
There is no formal assessment for this course
Teaching materials
ATTENDING AND NOT ATTENDING STUDENTS
The slides available on Bboard are exhaustive and offer a short but complete description of the topics. For a more detailed discussion, students can refer to
§ P. NEWBOLD, W.L. CARLSON, B. THORNE, Statistics for Business and Economics, Pearson/Prentice Hall, 9th global edition (2019).