Peregrine - Quantitative Research
Techniques and Statistics
What is Statistics? - CORRECT ANSWER-"Statistics is a way to get information
from data."
Mean
Median
Mode - CORRECT ANSWER-Mean: Average
Median: Middle
Mode: Most common number
_________ statistics is a body of methods used to draw conclusions or
inferences about characteristics of populations based on sample data. -
CORRECT ANSWER-Inferential
A ___________ is a set of data drawn from a population. - CORRECT
ANSWER-sample
A descriptive measure of a population is a ___________ and a descriptive
measure of a sample is a _____________.
A. statistic, parameter
B. parametier, statistic
C. rule, statistic
D. statistic, estimation - CORRECT ANSWER-B. parametier, statistic
The simplest method of obtaining data is by ________________.
A. experiments
B. survey
C. direct observation
D. self-administered questionnaire - CORRECT ANSWER-C. direct observation
Key design principles for a questionnaire: - CORRECT ANSWER-Keep the
questionnaire as short as possible. Most people are unwilling to spend much time
filling out a questionnaire.
, Ask short, simple, and clearly worded questions to enable respondents to answer
quickly, correctly, and without ambiguity.
Start with demographic questions to help respondents get started and become
comfortable quickly.
Use dichotomous (yes/no) and multiple choice questions because of their
simplicity.
Use open-ended questions cautiously because they are time consuming and
more difficult to tabulate and analyze.
Avoid using leading questions that tend to lead the respondent to a particular
answer.
Trial a questionnaire on a small number of people to uncover potential problems,
such as ambiguous wording.
Think about the way you intend to use the collected data when preparing the
questionnaire. First determine whether you are soliciting values for a quantitative
variable or a categorical variable. Then consider which type of statistical
techniques, descriptive or inferential, you intend to apply to the data to be
collected, and note the requirements of the specific techniques to be used.
Simple random sample - CORRECT ANSWER-A simple random sample is a
sample selected in such a way that every possible sample with the same number
of observations is equally likely to be chosen.
Stratified random sample - CORRECT ANSWER-A stratified random sample is
obtained by separating the population into mutually exclusive sets, or strata, and
then drawing simple random samples from each stratum.
Cluster sample - CORRECT ANSWER-A cluster sample is a simple random
sample of groups or clusters of elements versus a simple random sample of
individual objects.
Techniques and Statistics
What is Statistics? - CORRECT ANSWER-"Statistics is a way to get information
from data."
Mean
Median
Mode - CORRECT ANSWER-Mean: Average
Median: Middle
Mode: Most common number
_________ statistics is a body of methods used to draw conclusions or
inferences about characteristics of populations based on sample data. -
CORRECT ANSWER-Inferential
A ___________ is a set of data drawn from a population. - CORRECT
ANSWER-sample
A descriptive measure of a population is a ___________ and a descriptive
measure of a sample is a _____________.
A. statistic, parameter
B. parametier, statistic
C. rule, statistic
D. statistic, estimation - CORRECT ANSWER-B. parametier, statistic
The simplest method of obtaining data is by ________________.
A. experiments
B. survey
C. direct observation
D. self-administered questionnaire - CORRECT ANSWER-C. direct observation
Key design principles for a questionnaire: - CORRECT ANSWER-Keep the
questionnaire as short as possible. Most people are unwilling to spend much time
filling out a questionnaire.
, Ask short, simple, and clearly worded questions to enable respondents to answer
quickly, correctly, and without ambiguity.
Start with demographic questions to help respondents get started and become
comfortable quickly.
Use dichotomous (yes/no) and multiple choice questions because of their
simplicity.
Use open-ended questions cautiously because they are time consuming and
more difficult to tabulate and analyze.
Avoid using leading questions that tend to lead the respondent to a particular
answer.
Trial a questionnaire on a small number of people to uncover potential problems,
such as ambiguous wording.
Think about the way you intend to use the collected data when preparing the
questionnaire. First determine whether you are soliciting values for a quantitative
variable or a categorical variable. Then consider which type of statistical
techniques, descriptive or inferential, you intend to apply to the data to be
collected, and note the requirements of the specific techniques to be used.
Simple random sample - CORRECT ANSWER-A simple random sample is a
sample selected in such a way that every possible sample with the same number
of observations is equally likely to be chosen.
Stratified random sample - CORRECT ANSWER-A stratified random sample is
obtained by separating the population into mutually exclusive sets, or strata, and
then drawing simple random samples from each stratum.
Cluster sample - CORRECT ANSWER-A cluster sample is a simple random
sample of groups or clusters of elements versus a simple random sample of
individual objects.
