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Indore Institute Of Law
(Affiliated to D.A.V.V. & Bar Council of India)
B.B.A.LL.B. (HONS.)
A PROJECT OF BUSINESS STATISTICS
SUBMITTED TO: Prof. Ambrish Bapat
SUBMITTED BY: Aishwarya Gupta
Data Collection
We know that, in the plural sense, statistics
means data or quantitative information
capable of some meaningful conclusions.
For the student of economics, the purpose of
data collection is to understand, analyze and
explain a socio-economic problem, for
example, the problem of unemployment or
poverty.
Sources of Data Collection
 Primary Source
Collection of data from its source of origin. It offers you first-
hand quantitative information relating to your statistical
study.
 Secondary Source
Collection of data from some agency or institution which
already happens to have collected the data through statistical
survey.
Methods of Collecting
Primary Data
Direct Personal Interviews
The data are personally collected by the investigator
from the informants.
Merits
 Originality
 Accuracy
 Reliability
Demerits
Limited Coverage
Personal Bias
Timely and Costly
Indirect Oral Interviews
The information is obtained not from the persons regarding
whom the information is needed. It is collected orally from
other persons who are expected to possess the necessary
information.
Merits
 Wide coverage
 Less Expensive
 Expert Opinion
Demerits
 Less Accurate
 Biased
 Doubtful
Conclusions
Information from Local Source or
Correspondents
The investigator appoints local agents or correspondents in
different places to collect information. These correspondents
collect and transmit the information to the central office
where the data are processed.
Merits
 Economical
 Wide coverage
 Continuity
Demerits
Loss of Originality
Personal Bias
Less Accuracy
Mailed Questionnaire
A list of questions pertaining to the survey is prepared and
sent to the various informants. The informant notes the
answer against the questions and return the completed
questionnaire to the investigator.
Merits
 Economical
 Original
 Wide Coverage
Demerits
 Limited use
 Lack of
Flexibility
 Less Accuracy
Schedules through Enumerators
Under this method, the enumerator himself approaches the
informant with the questionnaire. The questionnaire which
are filled by the enumerators themselves by putting questions
are called schedules.
Merits
 Wide Coverage
 Accuracy
 Completeness
Demerits
 Expensive
 Training of Enumerators
 Not Suitable for Private
Investigation
Secondary Data
Importance of Secondary Data in
Research
 Economical
 Time Saving
 Basis for Primary Data
 Accessibility
 May Answer Research Question
Importance of Statistics in Research
Work
 They permit the most exact kind of description:
 They force us to be definite
 They help us to summarize the results
 They enable us to draw general conclusions
 They enable us to make predictions
 They enable us to analyze some of the casual factors of
complex and otherwise bewildering events.
Questionnaire
THANK YOU

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Statistics

  • 1. Indore Institute Of Law (Affiliated to D.A.V.V. & Bar Council of India) B.B.A.LL.B. (HONS.) A PROJECT OF BUSINESS STATISTICS SUBMITTED TO: Prof. Ambrish Bapat SUBMITTED BY: Aishwarya Gupta
  • 2. Data Collection We know that, in the plural sense, statistics means data or quantitative information capable of some meaningful conclusions. For the student of economics, the purpose of data collection is to understand, analyze and explain a socio-economic problem, for example, the problem of unemployment or poverty.
  • 3. Sources of Data Collection  Primary Source Collection of data from its source of origin. It offers you first- hand quantitative information relating to your statistical study.  Secondary Source Collection of data from some agency or institution which already happens to have collected the data through statistical survey.
  • 5. Direct Personal Interviews The data are personally collected by the investigator from the informants. Merits  Originality  Accuracy  Reliability Demerits Limited Coverage Personal Bias Timely and Costly
  • 6. Indirect Oral Interviews The information is obtained not from the persons regarding whom the information is needed. It is collected orally from other persons who are expected to possess the necessary information. Merits  Wide coverage  Less Expensive  Expert Opinion Demerits  Less Accurate  Biased  Doubtful Conclusions
  • 7. Information from Local Source or Correspondents The investigator appoints local agents or correspondents in different places to collect information. These correspondents collect and transmit the information to the central office where the data are processed. Merits  Economical  Wide coverage  Continuity Demerits Loss of Originality Personal Bias Less Accuracy
  • 8. Mailed Questionnaire A list of questions pertaining to the survey is prepared and sent to the various informants. The informant notes the answer against the questions and return the completed questionnaire to the investigator. Merits  Economical  Original  Wide Coverage Demerits  Limited use  Lack of Flexibility  Less Accuracy
  • 9. Schedules through Enumerators Under this method, the enumerator himself approaches the informant with the questionnaire. The questionnaire which are filled by the enumerators themselves by putting questions are called schedules. Merits  Wide Coverage  Accuracy  Completeness Demerits  Expensive  Training of Enumerators  Not Suitable for Private Investigation
  • 11. Importance of Secondary Data in Research  Economical  Time Saving  Basis for Primary Data  Accessibility  May Answer Research Question
  • 12. Importance of Statistics in Research Work  They permit the most exact kind of description:  They force us to be definite  They help us to summarize the results  They enable us to draw general conclusions  They enable us to make predictions  They enable us to analyze some of the casual factors of complex and otherwise bewildering events.
  • 14.