Secondary data umesh

hello

Submitted By:Navkiran, Raj and

Umesh16/09/2010

RMDM Presentation

Submitted To: Prof. Manbeena Lehal

ResearchPrimary DataSecondary DataSurveyQuestionnaireObservation

Research

ResearchResearch can be

defined as the search for knowledge/ information or as any systematic investigation to establish facts.

Why is research needed?

Research

Exploratory

Descriptive

Causal

Primary Data

Data originated by the researcher for the specific purpose of addressing the research problem.

Primary Data

Observation

Focus Group

Interviews

Survey

Secondary Data

Secondary Data

Data collected for some purpose other then the problem at hand.

Primary Data Vs Secondary Data

For the Problem at hand

Very involved

High cost

Time taking

For other Problems

Rapid and easy process

Relatively Low

Short

Secondary Data

Internal

External

Ready to use

Requires further

processing

Published materials

Computerized data bases

Syndicated services

Internal Data

Ready to use

Requires further processing

External Data

Published materials

Computerized data bases

Syndicated services

Evaluation of data

Criteria Issues Remarks

Specification / methodology

Data collection method, response rate, quality, sampling techniques, sample size, questionnaire design etc.

Data should be reliable, valid and generalizable

Error / accuracy

Examine error in approach Access accuracy by comparing data from different sources.

Currency Time lag between collection and publication of data

Census data are periodically updated

Objective Why was the data collected? Objective determines the relevance

Dependability Credibility, reputation, trustworthiness

Data should be obtained from original source

Advantages

Low CostsSpeedAvailabilityFlexibilityAccessibility

Disadvantages

AccuracyQualityTime FramePoor Fit

Questionnaire

QuestionnaireA structured technique for data collection

that consists of questions, written or verbal, that a respondent answers.

Types of interviewing methods

Personal questionn

aire

Mail questionn

aire

Telephone questionn

aire

Survey

A structured questionnaire given to respondents, designed to elicit specific information.

SURVEY METHODES

Telephone interviewing

Personal interviewing

Mail interviewing

Electronic interviewing

traditional

Computer- assisted

In- home

Mall intercept

Computer- assisted

Mail

Mail panel

E-mail

internet

Observation

The recording of behavioral pattern of people, objects and events in a systematic manner to obtain information about the phenomenon of interest.

Observation Methods

Personal observatio

n

Mechanical observatio

nAudit

Content Analysis

Trace Analysis