Course: 2022/2023

Statistics

(14200)

Requirements (Subjects that are assumed to be known)

Calculus I
Algebra

By the end of this subject, students will be able to have:
1. knowledge and understanding of the statistic principles underlying their branch of engineering;
2. the ability to apply their knowledge and understanding to identify, formulate and solve statistic problems using established methods;
3. the ability to apply their knowledge and understanding to analyse engineering products, processes and methods;
4. an understanding of statistics methodologies, and an ability to use them.
5. the ability to select and use appropriate statistic tools and methods;
6. the ability to combine theory and practice to solve engineering problems;
7. an understanding of applicable statistic techniques and methods, and of their limitations;

Skills and learning outcomes

Description of contents: programme

Topics:
1. Descriptive Statistics
1.1 Qualitative and Quantitative data.
1.2 Univariate Descriptive Statistics.
1.2.1 Summary of data using frequency tables.
1.2.2 Graphical representation of data.
Graphical representation for qualitative data:
Bar chart, pie chart, Pareto diagram.
Graphical representation for quantitative data:
Histograms, frequency polygons, boxplots.
1.2.3 Analytical measures for data summary.
Measures of central tendency: Average, median and mode.
Measures of variability: Variance, Coefficient of Variation, Median, Quartiles and Percentiles.
Other Measures: Skewness and kurtosis.
1.3 Descriptive statistics for two variables.
Scatter plots. Covariance and correlation.
2. Probability
2.1 Introduction to the concept of probability:
Equiprobability and Laplace rule.
Frequentist approach and law of large numbers.
2.2 Events and operations with events.
Event definition. Venn diagrams. Union, Intersection and complementary events.
2.3 Definition and properties of the probability.
2.4 Independence and conditional probability.
2.5 law of total probability.
2.6 Bayes Theorem.
3. Random variables and probability models
3.1 Definition of random variable (discrete / continuous) and properties. Probability function, density function.
3.2 Expectation and variance of discrete and continuous random variables.
3.3 Distribution function.
3.4 Probability Models for discrete random variables. Bernoulli, Binomial.
3.5 Probability Models for continuous random variables. The normal distribution. The central limit theorem.
4. Statistical Inference
4.1 Introduction to statistical inference.
Population and sample. Distribution of the sample mean.
4.2 Confidence intervals for the sample mean.
5. Hypothesis Testing
5.1 Population and sample (review).
5.2 Null hypothesis and alternative hypothesis.
5.3 Hypothesis testing for the mean, proportion and variance of one population.
5.4 Hypothesis testing for two populations: Difference of means and proportions.
6. Quality control
6.1 Introduction to quality control
6.2 Control charts for variables. Control charts for the mean and range. Process capability.
6.3 Control charts for attributes. P and np control charts.
7. Regression
7.1 Introduction to linear regression.
7.2 Simple regression.
Hypothesis.
Estimation of parameters. Significance and interpretation
Diagnosis.
7.3 Multiple regression.
Hypothesis.
Estimation of parameters, significance and interpretation
Diagnosis
Multicollinearity
7.4 Regression with qualitative variables (dichotomous / polytomous).

Learning activities and methodology

- Lecture: 2,5 ECTS
- Problem solving sessions (in small groups): 1,5 ECTS
- Computes sessions (consistent of individual work out of the classroom with programmed tutorial sessions) 1,5 ECTS
- Evaluation sessions (continuos evaluation, some of them at computes laboratories): 0,5 ECTS

Assessment System

- % end-of-term-examination 50
- % of continuous assessment (assigments, laboratory, practicals...) 50

Basic Bibliography

- PEREZ, C.. "Estadística práctica con Statgraphics". 2000.
- PEÑA, D. Y ROMO, J.. "Introducción a la Estadística para las Ciencias Sociales". McGraw-Hill.

The course syllabus may change due academic events or other reasons.

**More information: **http://www.est.uc3m.es/esp/nueva_docencia/leganes/ing_tec_industrial_todas/metodos_estadisticos/