Statistics is the science of collection, organisation, presentation, analysis and interpretation of the numerical data.
(i) Data The word data means, Data can be defined as a collection of facts or information from which conclusions may be drawn.
e.g.
The data shown below are Sameer's scores on five Math tests conducted in 10 weeks.
45, 23, 67, 82, 71
(ii) Primary and secondary data The data collected by the investigator himself is known as the primary data, while the data, which is already
collected by other persons is know as secondary data. e.g. As investigator collects data related to industries through the government organisations.
(iii) Variable or Variate A characteristics that varies in magnitude from observation to observation. e.g. Weight, height, income, age, etc. are variables.
(iv) Frequency The number of times an observation occurs in the given data, is called the frequency of the observation.
Statistics is the science of collection, organisation, presentation, analysis and interpretation of the numerical data.
(i) Data The word data means, Data can be defined as a collection of facts or information from which conclusions may be drawn.
e.g.
The data shown below are Sameer's scores on five Math tests conducted in 10 weeks.
45, 23, 67, 82, 71
(ii) Primary and secondary data The data collected by the investigator himself is known as the primary data, while the data, which is already
collected by other persons is know as secondary data. e.g. As investigator collects data related to industries through the government organisations.
(iii) Variable or Variate A characteristics that varies in magnitude from observation to observation. e.g. Weight, height, income, age, etc. are variables.
(iv) Frequency The number of times an observation occurs in the given data, is called the frequency of the observation.