Empirical Research Methods I

Main resources:

• Independent samples t-test
  • Short Text - The t-Test: http://www.socialresearchmethods.net/kb/stat_t.php
  • Short Text - Independent t-test using SPSS Statistics : https://statistics.laerd.com/spss-tutorials/independent-t-test-using-spss-statistics.php
  • Video - Independent t-test - Explained Simply - 5m05s:

• t-test with SPSS
  • Text tutorial - SPSS Independent Samples T-Test Tutorial: http://www.spss-tutorials.com/spss-independent-samples-t-test/
  • Video - SPSS Tutorial: Independent t test - 11m58s:

• Alpha error inflation
  • Short text - One-Way ANOVA. Problem of alpha -inflation: https://webstat.une.edu.au/unit_materials/c7_anova/oneway_problem_alpha.htm
  • Short text - What is the Familywise Error Rate?: http://www.statisticshowto.com/familywise-error-rate/

• Using the t-table to find the p-value in one-sample t-tests
  • Video - Using the t Table to Find the P-value in One-Sample t Tests - 7m10s:
  • Video - Finding P-value from Test Statistic (t-distribution) - 9m42s:

Additional resources:

• One- and two-tailed t-test
  • Short Text - FAQ: WHAT ARE THE DIFFERENCES BETWEEN ONE-TAILED AND TWO-TAILED TESTS?: https://stats.idre.ucla.edu/other/mult-pkg/faq/general/faq-what-are-the-differences-between-one-tailed-and-two-tailed-tests/

• p-value and significance level α
  • Video - Null Hypothesis, p-Value, Statistical Significance, Type 1 Error and Type 2 Error - 5m20s:
  • Short Text - Alphas, P-Values, and Confidence Intervals, Oh My!: https://blog.minitab.com/blog/alphas-p-values-confidence-intervals-oh-my

• Violations of assumptions
  • Book chapter "Der t-Test", page 59 (in German): http://www.quantitative-methoden.de/Dateien/Auflage3/leseprobe_A3.pdf