Test your knowledge.Receive immediate feedback.You find all answers in the book. Quiz | Basics of Data Analysis /6 45 Quiz | Basics of data analysis 1 / 6 Which of the following scale levels allows for the most arithmetic operations? Nominal scale Ordinal scale Interval scale Ratio scale 2 / 6 What statements are correct? Regression analysis is also called the "mother" of multivariate methods. Cluster analysis and factor analysis aim to summarize data. Contingency analysis and discriminant analysis differ only with regard to the required scale level of the independent variables. Cluster analysis and factor analysis belong to the structure-testing methods. Analysis of variance (ANOVA) belongs to the structure-describing methods. 3 / 6 Which statements about statistical parameters are correct? Only for standardized data a standard deviation can be calculated. The sum of the deviations from the arithmetic mean is always zero. The mean of standardized data is always 1. For normally distributed data, the following applies: mean=median=mode The correlation coefficient results from the square root of the variance. 4 / 6 Which of the following methods do not allow to detect outliers? Boxplots Standardization of data Histograms Calculation of the median Calculation of the mean 5 / 6 The difference between correlation and causality is that … a correlation is always positive, whereas with causality negative values are also possible. in causality there is always a cause-effect-relationship between variables, while correlation only expresses the strength of an undirected relationship between two variables. causality is always based on a correlation, but not vice versa. causality does not require information about the origin of the data. 6 / 6 What is meant by the centering property of the mean? Check Your score is 0% Restart quiz Learn more…MethodsServiceAbout us ContactFeedbackOrder data etc. GeneralImprintPrivacy notice
