Introduction of statistical Investigation
Components of Investigations : Investigator, Respondent, Enumerators
Various stages of statistical investigation:
1. Planning/Arrangement/organization
2. Collection of Data of investigation
3. Editing of data
4. Presentation of data
5. Analysis of data
6. Interpretation of data
7. Preparation of investigation report
Types of statistical investigation :
1. Census or Sampling investigation
2. Direct or indirect investigation
3. Experiment or survey investigation
4. Confidential or open investigation
5. Original or repetitive investigation
6. Regular or Ad hoc investigation
7. Postal or personal investigation
8. Pilot or Comprehensive investigation
9. Government (official) or semi government (semi-official) or unofficial investigation
10. Extensive or limited investigation
Statistical Units :
(A) Units of Enumeration
(B) Units of Analysis or Interpretation
Schedule and Questionnaire
Difference between Questionnaire and Schedule
Statistics as an Art
Statistics as an Science
Characteristics/Features of statistics
Importance of statistics :
(1) Useful to banker
(2) Useful to insurance company
(3) Useful to transport company
(4) Useful to business
(5) Useful to economists
(6) Useful to planning
(7) Useful to state
Scope of Statistics
Limitation of statistics
Distrust of Statistics
Causes of distrust in Data
Method of Statistical Investigation
Advantages and Disadvantages of Census Investigation
Sample Investigation
Advantages and Disadvantages of Sample Investigation
Collection of Data
Types of Data : Primary Data and Secondary Data
Methods of collecting Primary data and Secondary Data
Difference between primary and secondary data
Editing of Statistical Data
Process of Editing
Accuracy, Approximation and Statistical Errors
Classification :
Objects of Classification
Tabulation :
Objects of Tabulation
Frequency Distribution / Statistical Series
Elements of Frequency Distribution
Kinds of Frequency Distribution
