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This video discusses two other measures of variability that are often used in statistical studies: the variance and the standard deviation. You learn how to calculate the variance and standard…
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English - en Department
FMG
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In this video Matthijs discusses an example in which he uses all the core elements of this module. In the example, your data matrix contains the average grades in chemistry of 8 high schools.…
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English - en Department
FMG
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In this video you learn how to compute a Z-score and why it is useful. Sometimes, researchers want to know if a certain observation is common or exceptional. To find out they calculate the number of…
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English - en Department
FMG
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To describe a distribution you need more information than the measures of central tendency. You also need information about the variability (or dispersion) of the data. Matthijs discusses the…
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English - en Department
FMG
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Next to summarizing a distribution by means of graphs, it can also be useful to summarize the center of your distribution. In this video Matthijs discusses three main ways to do this: the mode, mean…
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English - en Department
FMG
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In this video Matthijs shows you how to summarize and present data from frequency tables into different types of graphs. He discusses the (dis)advantages of bar graphs vs. pie charts, dot plots vs.…
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English - en Department
FMG
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This video explains what a data matrix and frequency table are and how you can use them with different types of variables. The video also shortly touches upon what to do with missing values and how…
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English - en Department
FMG
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This video explains the difference between cases and variables. Variables can be measured on different levels. There are categorical variables (nominal, ordinal) and quantitative variables (interval,…
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English - en Department
FMG
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