What are statistics?
Statistics are numbers that show facts, such as national income statistics, etc. Statistics are related to our daily lives. We can see from News in newspapers radio broadcasting television radio There will be numerical data to show various facts such as statistics on the exchange rate of the baht. Statistics on buying and selling derivatives on the stock exchange National income statistics Gross Domestic Product Statistics Temperature statistics
Mathematically Statistics means science or principle. and statistical methods which consists of the following steps:
- Collection of information
- Presentation of information
- Data analysis
- Interpreting data
Classification of data
- Quantitative data Is information that is in the form of numbers.
- Qualitative data It is information that shows characteristics or properties.
Source of information
- Primary data is information collected from the source.
- Secondary data It is information that is collected from reference sources.
- Data Collection
- Collect information from historical registers
- Collect data from surveys
- Collect data from experiments
- Collect data from observation
