Statistics in psychology I

Study level: Undergraduate study programme in psychology
Lecturers: Dragutin Ivanec, Ph.D., Koraljka Modić Stanke, Ph.D., Mirjana Tonković, Ph.D., Ivan Tomić
Language: Croatian
Semester: 1st (winter)
Status: mandatory
Form of instruction with class hours: 30 hours of lectures, 30 hours of exercise
Prerequisites: none
Student evaluation: written and oral exam

Course description

Using statistics in psychological research and practice. Comparison and distinction between “clinical” and “statistical” approach in psychology. Structuring results of psychological observations and/or measurements and the model of normal distribution. The need and purpose of using tables and graphs for representing results. The purpose and meaning of different  measures of central tendency: Mean, median, mode. Dispersion of results: Standard deviation, inter-quartile range, coefficient of average dispersion, total range, coefficient of variation.  Comparison of different types of distributions of results. Mean, standard deviation and number of results in normal distribution. Z-scores and deciles (centiles). Using normal distribution tables.  Parameter estimation. Testing differences between means and proportion (t-test). Testing the normality of distributions and the differences between distributions (chi-square test).

Course objectives

Understanding basic statistical concepts and their theoretical foundations important for their appropriate use in data analyses. Developing skills important for using statistical analyses in organizing and preparing data for psychological interpretation.

Required readings

Petz, B. (2004). Osnovne statističke metode za nematematičare. Jastrebarsko: Naklada Slap.

Kolesarić, V. i Petz. B. (2003). Statistički rječnik. Jastrebarsko: Naklada Slap.

Recommended readings

Aron, A. & Aron, E.N. (2002). Statistics for Psychology. Upper Saddle River: Prentice Hall, Inc.