Q2(Week 3) Flashcards
a tool used to collect, measure, and analyze data related to your research problem. It
includes interviews, tests, surveys, and observations.
Research Instrument
Characteristics of a Good Instrument
is valid and reliable, based on a conceptual of the
study, able to test the hypothesis or answer
the research questions, Free of biased and with appropriate
context/meaning, contains clear and definite instructions
to use the instrument.
is a research instrument consisting of
series of questions for the purpose of gathering information from respondents. It is a written interview.
Survey questionnaire
is the extent to which any research instrument
measure what it intended to measure (Thatcher, 2010). It is
the degree to which the results are truthful and acceptable.
Validity
measures how adequate or sufficient are the
questions on the instrument that can be asked about the concept
or construct.
Content validity
In assessing the content validity, ______ can be used.
Lawshe Content
Validity Ratio (CVR)
It is rating each
item or question in the instrument whether it is
essential, useful but not essential and not necessary.
Lawshe Content
Validity Ratio (CVR)
is about whether a test appears to
measure what is supposed to measure. This type of
validity is concerned with whether a measure seems
relevant and appropriate for what it is assessing on the
surface.
Face validity
Commonly used is the Good and Scates Validity Test.
Face Validity
refers to the consistency, stability and
repeatability of results, that is, the result of the
researcher is considered to be reliable if consistent
results have been obtained in identical situation but
different circumstances.
Reliability
Reliability is not sufficient unless combined with ____
validity
It is the process of gathering, measuring,
and analyzing accurate data from a variety
of relevant sources to find answers to
research problems.
Data collection
provides a cheap, quick and
efficient way of obtaining large
amount of information from a
large sample of people.
Survey Questionnaire
is basically a
science that involves data
collection, data
interpretation and data
validation.
Statistics
is a
procedure of performing various
statistical operations.
Statistical data analysis
When certain proportion of the
population based on certain variables
such as age, sex, income etc, _____ counts may be used.
frequency
When the typical, normal or
average is desired to be
known, the ______ such as
mean median, mode may be
used.
measures of
central tendency
is computed by summing all
the observations in the sample and
dividing the sum by the number of
observations.
Mean
When the variables are abstract such that they
cannot be counted like level or extent. The _____ may be computed.
weighted mean/average
is the value of the middle item
of an array either in ascending or
descending order.
Median
is the observation
that occurs most frequently.
In the previous example, 11
is the mode with the
greatest frequency.
Mode
If a significance of difference between two
groups about a certain situation, the computation
of the difference between mean is to be made.
This statistical measure is called
t-test
This is used to determine if
the difference in the means between
two samples is significant or not.
t – test for independent
samples.
used
when 2 sets of measurements of the
same variable are generated from
each subject OR one set of
measurements from subjects which
have been paired off
(related samples) : t – test.
Testing for the difference among
three or more means
ONE-WAY ANALYSIS OF
VARIANCE (ANOVA)
To determine the
relationship or association
between two variables, ____ may be used.
Spearman Rho or Pearson
Moment of Correlation
TESTS OF HYPOTHESIS CONCERNING
RELATIONSHIPS:
Chi – square test for
independence
Measurements of the variables are at least ordinal.
b. Spearman Rank Correlation
Coefficient
Measurements of the variables are at least
nominal.
Chi – square test for
independence
TESTS OF HYPOTHESIS CONCERNING
RELATIONSHIPS:
Pearson Product Moment
Correlation Coefficient
Measurements of the variables are at least interval.
Pearson Product Moment
Correlation Coefficient
