DATA COLLECTION

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DATA COLLECTION
Business Statistics
Math 122a
DLSU-D
Source: Elementary Statistics (Reyes, Saren)

Methods of Data Collection
1.
2.
3.
4.
5.

DIRECT or INTERVIEW METHOD
INDIRECT or QUESTIONNAIRE
METHOD
REGISTRATION METHOD
OBSERVATION METHOD
EXPERIMENT METHOD

DIRECT or INTERVIEW
Use at least two (2) persons – an
INTERVIEWER & an INTERVIEWEE/S – exchanging information.
 Gives us precise & consistent information because clarifications can be made.
 Questions not fully understood by the respondent, may be repeated until it suits the interviewee’s level.

DIRECT or INTERVIEW
Time consuming
 Expensive
 Limited coverage


INDIRECT or QUESTIONNAIRE
This is a method where written answers are given to prepared questions.
 Compared to the Direct method, this requires less time
 It is inexpensive since the questionnaires can simply be mailed or hand-carried.
 Gives the respondent a sense of freedom in honesty answering the questions because of secrecy.

REGISTRATION METHOD
This is a method enforced by certain laws.
Examples:
 Registration of birth
 Registration of marriage
 Registration of death

OBSERVATION
This is a method which observes the behavior, characteristic, reaction, interaction of individuals or organizations in the study.
Observe: To notice using a full range of appropriate senses. To see, hear, feel, taste, and smell

This is also used when the respondents cannot read nor write.

EXPERIMENT
This method is used when the objective of the study is to determine the cause and effect of certain phenomena or event. Characteristics Of
A Good Question
1.

A good question is unbiased.




Must not be worded in a manner that will influence the respondent to answer in a certain way, that is to favor a certain response or to be against it.
An unbiased question is stated in neutral language and has no element of pressure.

Characteristics Of
A Good Question
Examples of unbiased questions:
 Do you watch Korean Novelas?
 Do you like classical music?

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