BUAL 2600 Yan Exam 1 || INSTRUCTOR-VERIFIED
QUESTIONS & ANSWERS; 100% CORRECT!!
Data correct answers Facts and figures from which conclusions can be drawn
Data Set correct answers The data that are collected for a particular study
Variable correct answers any characteristic of an element
Quantitative Variables correct answers The possible measurements of the values of a variable are
numbers that represent quantities
Ex: Age
Qualitative (Categorical) Variables correct answers Labels or names used to identify an attribute
of each element
Ex: Names, addresses, phone numbers
Cross Sectional Data correct answers Data collected at. the same time or approximately the same
time
Time Series Data correct answers Data collected over different time periods
Population correct answers A set of all elements about which we draw conclusions
Sample correct answers A. subset of all the elements in a population
Probability Sampling correct answers Sampling where we know the change that each element in
the population will be included in the sequence
convience sampling correct answers sampling where we select elements because they are
convenient to sample
not a probability sample
voluntary response sampling correct answers samples in which participants self-select
-frequently used by radio and television
-over represent people with strong opinions
judgements sampling correct answers samples in which a person who is extremely knowledgable
about the population selects population elements he or she feels are most representative
nominative variable correct answers a qualitative variable for which there is no meaningful
ordering, or ranking, of the categories
Ex: gender, car color
, ordinal variable correct answers A qualitative variable for which there is a meaningful ordering
or ranking of the categories.
Ex: teaching effectiveness
interval variable correct answers All of the characteristics of ordinal (meaningful ranking) plus...
measurements are on a numerical scale with an arbitrary zero point and can only meaningfully
compare values by the interval between them
Ex: Temperature
ratio variable correct answers interval plus Measurements are on a numerical scale with a
meaningful zero point such as anything related to money
Ex: Earnings, profit, loss, age, distance, height
stratified random sampling correct answers divide population into non-overlapping groups
(strata) then select a random sample from each strata
multistage cluster sampling correct answers divide population into clusters and then randomly
select clusters to sample
systematic sampling correct answers list population, select random starting point, sample each
nth element
dichotomous questions correct answers -clearly stated
-easy to answer
-easy to analyze
-limited information
multiple choice questions correct answers -allow more than two responses
-usually analyzed with averages
open-ended questions correct answers -most honest and complete information
-cannot be readily summarized
phone surveys correct answers -inexpensive
-low response rate
mail surveys correct answers -inexpensive
-low response rate (20-30%)
-requires multiple mailings
web surveys correct answers -cheaper still
-same problems as mail surveys
personal interviews correct answers -more expensive
-more control
-higher response rates
QUESTIONS & ANSWERS; 100% CORRECT!!
Data correct answers Facts and figures from which conclusions can be drawn
Data Set correct answers The data that are collected for a particular study
Variable correct answers any characteristic of an element
Quantitative Variables correct answers The possible measurements of the values of a variable are
numbers that represent quantities
Ex: Age
Qualitative (Categorical) Variables correct answers Labels or names used to identify an attribute
of each element
Ex: Names, addresses, phone numbers
Cross Sectional Data correct answers Data collected at. the same time or approximately the same
time
Time Series Data correct answers Data collected over different time periods
Population correct answers A set of all elements about which we draw conclusions
Sample correct answers A. subset of all the elements in a population
Probability Sampling correct answers Sampling where we know the change that each element in
the population will be included in the sequence
convience sampling correct answers sampling where we select elements because they are
convenient to sample
not a probability sample
voluntary response sampling correct answers samples in which participants self-select
-frequently used by radio and television
-over represent people with strong opinions
judgements sampling correct answers samples in which a person who is extremely knowledgable
about the population selects population elements he or she feels are most representative
nominative variable correct answers a qualitative variable for which there is no meaningful
ordering, or ranking, of the categories
Ex: gender, car color
, ordinal variable correct answers A qualitative variable for which there is a meaningful ordering
or ranking of the categories.
Ex: teaching effectiveness
interval variable correct answers All of the characteristics of ordinal (meaningful ranking) plus...
measurements are on a numerical scale with an arbitrary zero point and can only meaningfully
compare values by the interval between them
Ex: Temperature
ratio variable correct answers interval plus Measurements are on a numerical scale with a
meaningful zero point such as anything related to money
Ex: Earnings, profit, loss, age, distance, height
stratified random sampling correct answers divide population into non-overlapping groups
(strata) then select a random sample from each strata
multistage cluster sampling correct answers divide population into clusters and then randomly
select clusters to sample
systematic sampling correct answers list population, select random starting point, sample each
nth element
dichotomous questions correct answers -clearly stated
-easy to answer
-easy to analyze
-limited information
multiple choice questions correct answers -allow more than two responses
-usually analyzed with averages
open-ended questions correct answers -most honest and complete information
-cannot be readily summarized
phone surveys correct answers -inexpensive
-low response rate
mail surveys correct answers -inexpensive
-low response rate (20-30%)
-requires multiple mailings
web surveys correct answers -cheaper still
-same problems as mail surveys
personal interviews correct answers -more expensive
-more control
-higher response rates
