Statistics is a discipline of applied mathematics concerned with gathering, organizing, and interpreting data. It's akin to studying the likelihood of occurrences occurring based on data gathering or known quantities of data.
The data dispersion or scatter is calculated using the observations and different central tendency measures.
A variable or variate is a symbol or attribute that fluctuates in magnitude from observation to observation. Weight, height, and other measurements, for example.
The most straightforward measure of departure from a value is the mean Deviation, which is usually the mean or median value. Take the mean of Deviation for the observations from the value is d = x – a to determine the mean Deviation. The fixed value is a, and the observation is x.
To calculate the mean Deviation, use the following formula.
Mean Deviation = Number of observations / Sum of absolute values of deviations from 'a'
The frequency of observation is the Number of times it occurs in a particular data set.
A discrete frequency distribution is a frequency distribution in which the data is presented so that the precise measurements of the units are visible.