Frequency plots help monitor the spread of continuous data. A frequency plot is a graph showing a variable’s distributional information.
Cumulative Sum Chart (CUSUM) is a type of control chart used to detect the deviation of the values or subgroup mean from the target value.
Not all statistics are the same. It’s useful to discern between the various types of statistics when doing analysis.
Central tendency is the idea that when using normal data, all three of the main measures (mean, mode, median) tend to be roughly the same.
Dispersion is the degree of variation in the data. In other words, the extent of the spread of values from the mean.