Answer: Descriptive statistics
Step-by-step explanation:
Descriptive statistic is defined as the method fro summarizing data and information to partition them into a section of meaningful data.It contains descriptive coefficients that defined the meaningfulness of the data .
Variability and central tendency are the part of descriptive statistics that describe the spread and central point of the data respectively.
Other options are incorrect because overall statistics measure complete components,average statistics take mean of complete statistic data and inferential statistic is based on random data sample.