COURSE AIMS AND OBJECTIVES: In this course students will be introduced to the basic concepts and results of probability theory and statistics. The emphasis will be on discrete and continuous distributions.
COURSE DESCRIPTION AND SYLLABUS:
1-2) Basic concepts of probability. Sample space, events, probability as a ratio. Laplace model. Interpretations of probability (frequentist / a posteriori, subjective). Properties of probability, definition of a probability space (on an algebra of events and on a Sigma-algebra of events). Construction of a finite probability space, discussion of a countable probability space. Intuitive introduction to the concept of a distribution. Conditional probability, independence. Total probability formula, Bayes' formula.
3-4) Repetition of experiments. Product of discrete probability spaces, repetition of experiments, independence. Bernoulli scheme, binomial distribution, the concept of a binomial random variable. Normal approximation of the binomial distribution, the De Moivre-Laplace theorems (proof optional). Poisson approximation of a binomial random variable.
5-6) Discrete random variables. Definition of a random variable, distribution of a random variable, probability mass function, function of a random variable, random vector, joint probability function of a random vector, independence of random variables. Mathematical expectation, expectation of a sum, expectation of a function of a random variable, Markov's inequality. Variance, Chebyshev's inequality, the (weak) law of large numbers, the central limit theorem (without proof). Examples of discrete distributions - binomial, geometric, negative binomial, hypergeometric, Poisson.
7-8) Continuous distributions. Continuous random variable, probability density function, mathematical expectation and variance, comparison with the discrete random variable, examples (uniform, exponential, normal). Functions of a continuous random variable, change-of-variables formula. Distribution function of a random variable.
9-10) Continuous multidimensional distributions. Continuous random vectors, joint probability density function, independence of random variables. Distribution of functions of a random vector, sum, convolution, other operations, gamma distribution. Independent normal variables, Chi square - distribution, Student's t-distribution.
11-12) Foundations of statistics. Statistical data. Tabular and graphical presentation of a data set. Numerical characteristics of a data set (measures of central tendency, measures of variability).
Statistical dependence (contingency tables, correlation coefficient). Linear relationship between variables.
13-15) Population and sample. Population parameters and statistics. Elements of statistical inference. Parameter estimation. Confidence intervals. Statistical test, t-test, Chi square - test. Tests of homogeneity and independence of discrete variables (Chi square - test). Linear regression (estimation of the regression line, prediction).
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Uvod u matematičku statistiku, Ž. Pauše, Školska knjiga, Zagreb, 1993.
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Teorija vjerojatnosti, N. Sarapa, Školska knjiga, Zagreb, 2003.
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Elements of Statistics, F. Daly, D. J. Hand, M. C. Jones, A. D. Lunn, K. J. McConway, Addison-Wesley, 1995.
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Probability, J. Pitman, Springer Verlag, 1993.
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