(M) Data Collection

Question 1

CATEGORIES OF DATA ACCORDING TO SOURCES

A. Primary
B. Secondary

1. Those obtained first hand by the investigator to help him answer specifically the purpose(s) of his study.
2. Collecting data personally ensures accuracy, minimizes
   errors, and guarantees relevance to your research question.
3. Those which are already existing and which have been
   obtained by some other people for purposes not necessarily
   by those of the investigator’s
4. Not expensive since you are just borrowing from an existing
   data
5. Expensive (research assistance)
6. limitations and potential biases in the data collection process
   that could impact the accuracy and reliability of the results

Answer 1

1. A
2. A
3. B
4. B
5. A
6. B

Question 2

METHODS OF DATA COLLECTION

A. Documented sources
B. Observations
C. Query

1. Physical examination, laboratory
2. Pre-collected data
3. Interviews and questionnaire

Answer 2

BAC

Question 3

Query

● For variables which are not amenable to observation. Ex.
Opinion/ feelings
● Data collection instrument: Interview schedule (the kodigo
when asking questions)
● It should last only for 45 mins to a maximum of 1 hour

Answer 3

Interviews

Question 4

Methods of Data collection

● Written questions with space provided
● Less expensive and less time consuming
● Disadvantages
○ people does not really read and understand the
questionnaires
○ Some of the questionnaires di na raw bumabalik
○ Pagbumalik naman daw its either mali yung sagot
or kulang kulang
● To guarantee meeting your target, collect more
questionnaires than needed, as not all will be returned or
usable.

Answer 4

QUESTIONNAIRE

Question 5

QUALITIES OF STATISTICAL DATA

A. ACCURACY
B. PRECISION
C. COMPLETENESS
D. RELEVANCE
E. ADEQUACY

1. refers to how close the measurement or the data is to its true value
2. extent to which similar information is obtained when a
   measurement is performed or an observation is made more
   than once (Repeatability/ Consistency)
3. consistency of the data produced for the needs of the data
   users
4. It should beyond the need

Answer 5

ABDE

Question 6

METHODS OF DATA COLLECTION (3)

Answer 6

● Review of documents
● Observation
● Query

Question 7

INSTRUMENT/ TOOLS FOR DATA COLLECTION (2)

Answer 7

● Questionnaire
● Devices and Tests