Biostatistics
What is the normal distribution?
The normal distribution or Gauß distribution is called normal, as it is seen as the ideal case of a distribution. It is showing the distribution
The normal distribution or Gauß distribution is called normal, as it is seen as the ideal case of a distribution. It is showing the distribution
The correlation coefficient (r) is a specific measure that quantifies the strength of a linear statistical relationship between two variables, as well as its direction.
Cross tables are also known as contingency or multidimensional tables. Large amounts of data can be summarized in a structured way and possible relationships between
In clinical studies usually a large number of data is generated. The challenging part is then to present the data in a structured and condensed
Descriptive statistics present a good first overview of the data. The frequency of occurrence, as part of descriptive statistics, provides information that is easy to
When presenting the data descriptively, the distribution of single variables can include the following parameters: Scatter parameters such as the mean, median, and mode; dispersion
Clinical trials often aim to establish two key parameters about a novel treatment or device: They should show that the product is safe and efficacious.
Descriptive statistics summarize a sample, for example the group of patients included in a clinical trial. They have to be distinguished from inductive and explorative
What do statisticians mean when they talk about parameters or variables? In the frame of a clinical study, a variable is something that can be
It is a widely spread view that biostatisticians should be involved only after data has been collected. But involving a biostatistician already in the planning
