N580 Final Exam || Most Recent Exam 2025/2026 Actual
Complete Real Exam Questions And Correct Answers
(Verified Answers) Already Graded A+ / Guaranteed
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if data are nominal or ordinal and you are comparing 2 groups
- ANSWER-Chi
square (nominal) or Mann Whitney U
(ordinal)
(non-
parametric)
what type of research questions are answered by descriptive
statistics - ANSWER-try to describe an event/phenomena that
we don't know a lot about what are the most frequently
perceived benefits of and barriers to medication and dietary
compliance among two samples of patients with heart failure?
what is the infant mortality rate among US immigrants from Iraq
and Afghanistan?
In addition, descriptive statistics are always used in describing
the research sample and should always be presented in regard
to outcome variables
when you read results you always want to read... - ANSWER-
what were the
,values in the outcome
variables
statistically significant doesn't mean clinically
significant/relevant
in the central limit theorem: the mean of sampling distribution
equals... - ANSWER-the population mean so the average
sampling error would always be zero
because sampling distributions usually approximate a normal
curve, probability statements about the likelihood of finding any
given sample mean can be madefirst we need to know the SD of
the sampling distribution of the means (SEM) also, SD of a
sampling distribution=SEM or standard error mean
(standard=average amount of error for all possible samples--
error=various sample means contain some error in estimating
the population mean)
what is the strength and direction of relationship? - ANSWER-
descriptive
statistics describe sample (many descriptive research
questions don't have hypotheses)
inferential statistics test hypotheses about correlations that
exist in larger
population
types of data required for correlational analyses - ANSWER-
data are numeric interval/ratio scales (equal distance between
points)
ordinal scales (in most cases--distance between categories is
unknown)--ex: military rank, socioeconomic status, health
status nominal scales (categorical variables) may be recoded,
,but other factors must be considered when deciding whether a
correlation coefficient is appropriate
descriptive statistics - ANSWER-describe and summarize
answer research questions, describe samples, and values of
outcome variables
not generalizable
how are descriptive statistics reported? - ANSWER-nominal
data - N, %, and
mode
measures of central tendency: mean, median,
and mode
measures of variability: such as range and
standard deviation
measures of distribution: skew and
kurtosis
best test for comparing 3 or more groups - ANSWER-ANOVA
(parametric)
if data are nominal or ordinal and you are comparing 3 or
more groups -
ANSWER-Chi square (nominal) or Kruskal-Wallis
H (ordinal)
, (non-
parametric)
best test for dependent groups - ANSWER-paired t tests
(parametric)
if data are nominal or ordinal and you are comparing
dependent groups -
ANSWER-McNemar (nominal) or
Wilcoxon (ordinal)
(non-
parametric)
statistics vs. parameters - ANSWER-analysis on a sample vs.
analysis on the
entire
population
overview to data analysis - ANSWER-quantitative: descriptive
and inferential
descriptive: simply describe a characteristic of a
population/sample or a
phenomenon
inferential: hope to generalize from a sample to a
population (based on
probability)--we use parametric and non-
parametric statistics
Complete Real Exam Questions And Correct Answers
(Verified Answers) Already Graded A+ / Guaranteed
Success!! / Newest Exam / Just Released!!
if data are nominal or ordinal and you are comparing 2 groups
- ANSWER-Chi
square (nominal) or Mann Whitney U
(ordinal)
(non-
parametric)
what type of research questions are answered by descriptive
statistics - ANSWER-try to describe an event/phenomena that
we don't know a lot about what are the most frequently
perceived benefits of and barriers to medication and dietary
compliance among two samples of patients with heart failure?
what is the infant mortality rate among US immigrants from Iraq
and Afghanistan?
In addition, descriptive statistics are always used in describing
the research sample and should always be presented in regard
to outcome variables
when you read results you always want to read... - ANSWER-
what were the
,values in the outcome
variables
statistically significant doesn't mean clinically
significant/relevant
in the central limit theorem: the mean of sampling distribution
equals... - ANSWER-the population mean so the average
sampling error would always be zero
because sampling distributions usually approximate a normal
curve, probability statements about the likelihood of finding any
given sample mean can be madefirst we need to know the SD of
the sampling distribution of the means (SEM) also, SD of a
sampling distribution=SEM or standard error mean
(standard=average amount of error for all possible samples--
error=various sample means contain some error in estimating
the population mean)
what is the strength and direction of relationship? - ANSWER-
descriptive
statistics describe sample (many descriptive research
questions don't have hypotheses)
inferential statistics test hypotheses about correlations that
exist in larger
population
types of data required for correlational analyses - ANSWER-
data are numeric interval/ratio scales (equal distance between
points)
ordinal scales (in most cases--distance between categories is
unknown)--ex: military rank, socioeconomic status, health
status nominal scales (categorical variables) may be recoded,
,but other factors must be considered when deciding whether a
correlation coefficient is appropriate
descriptive statistics - ANSWER-describe and summarize
answer research questions, describe samples, and values of
outcome variables
not generalizable
how are descriptive statistics reported? - ANSWER-nominal
data - N, %, and
mode
measures of central tendency: mean, median,
and mode
measures of variability: such as range and
standard deviation
measures of distribution: skew and
kurtosis
best test for comparing 3 or more groups - ANSWER-ANOVA
(parametric)
if data are nominal or ordinal and you are comparing 3 or
more groups -
ANSWER-Chi square (nominal) or Kruskal-Wallis
H (ordinal)
, (non-
parametric)
best test for dependent groups - ANSWER-paired t tests
(parametric)
if data are nominal or ordinal and you are comparing
dependent groups -
ANSWER-McNemar (nominal) or
Wilcoxon (ordinal)
(non-
parametric)
statistics vs. parameters - ANSWER-analysis on a sample vs.
analysis on the
entire
population
overview to data analysis - ANSWER-quantitative: descriptive
and inferential
descriptive: simply describe a characteristic of a
population/sample or a
phenomenon
inferential: hope to generalize from a sample to a
population (based on
probability)--we use parametric and non-
parametric statistics
