Q.What are the types of Statistics ?

Statistics is of two types — descriptive statistics (summarising data) and inferential statistics (drawing conclusions about a population from a sample).

In the statistical methods topic of the Tamil Nadu HSC Commerce syllabus, statistics is broadly classified into two types:

1. Descriptive Statistics

• Deals with the collection, organisation, summarisation and presentation of data.

• Describes the main features of the data using measures of central tendency (mean, median, mode), measures of dispersion (range, standard deviation), and tables, graphs and diagrams.

• It only describes 'what the data shows' without going beyond the data in hand.

2. Inferential Statistics

• Deals with drawing conclusions, making generalisations and predictions about a whole population on the basis of a sample. …