Question

Statistical data are aggregate of facts. Explain. 5 marks question.

Answer 1

Statistics as aggregate of numerical facts : Some quantitative information relating to an individual like Ram has two brothers cannot be taken as statistics. In the same way Ram has 100 rupees in his pocket cannot be taken as statistics. Only the aggregates of data will be taken as statistics. Given below are some examples of statistics.

1. Birth rate in India is 18 per thousand as compared to 8 per thousand in USA.

2. There are 40 students in Class XI compared to just 20 students in Class XII.

3. Over the past 5 years, India has won 40 test matches in cricket and lost 20.

Answer 2

Statistical data are aggregate of facts.

• The term "statistics" refers to the collection of facts. This is due to the fact that a single output or income figure cannot be referred to as statistics. Statistics is the name given to the collection of data.
• A procedure known as aggregation involves gathering data for statistical analysis and expressing it as a single number. It could take the shape of a total or an average. The best way to demonstrate the veracity of your claims is through statistics. Studies, which look for potential links between seemingly unrelated information but which still have a connection, are the foundation of statistics.
• For the sole purpose of enhancing query efficiency, aggregate fact tables are straightforward numeric rollups of the data in atomic fact tables. In order for BI tools to seamlessly select the proper aggregate level at query time, these aggregate fact tables should be accessible to the BI layer simultaneously with the atomic fact tables.
• The use of this data type emphasises the relationship between the data by grouping together all related data. Strings, arrays, classes, and structures are a few examples of aggregate data. Higher-level structures can be built using aggregate data types, which also allow for more efficient data usage.

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