Inference_statistics_english_final_25

Which comparison of mean values between two independent samples do we need to do in case that the T-test is inappropriate because the data are not normally distributed?

• Z-test

• U-test

• ANOVA

• Chi-square test

At which of the procedures we sometimes need a post-hoc test?

• ANOVA

• Chi-square test

• Correlation

• Regression

What is the appropriate effect size for ANOVAs?

• Cohen's d

• Cohen's w

• Pearson's r

• Eta-squared

With which value we can estimate the accuracy of the mean value in a sample?

• Standard error

• Standard deviation

• Median

• Mean

Which correlation procedure do I use in ordinal scaled data?

• Pearson's r

• Cramer's V

• It is not possible to do correlations with ordinal scaled data

• Spearman's Rho

In which situation should I use a very strict and conservative significance level (e.g., 0.001)?

• In preliminary studies

• In observational studies

• In case the alpha-error has severe consequences

• In case the beta-error has severe consequences

Which two error types can we make in hypothesis decisions? (two answers are correct)

• Maintain the null hypothesis although the null hypothesis is correct

• Reject the null hypothesis although the null hypothesis is correct

• Accept the alternative hypothesis although the alternative hypothesis is correct

• Accept the alternative hypothesis although the null hypothesis is correct

How can we transform raw values into standardized values?

• X-transformation

• Y-transformation

• Z-transformation

• Confidence interval

Why do we frequently chose an alpha-error of 0.05?

• Mathematical derivation

• Convention

• Fitting with the distribution curve

• Fitting with the distribution table

Which of the procedures is not a hypothesis testing procedure?

• Correlation

• Regression

• Analysis of variance

• Confidence interval