NURS 323 (Stats) Midterm Exam
Questions and Answers (Latest 2026)
Population of interest - Correct Answers ✅population that
you hope to draw a conclusion about.
Statistical population - Correct Answers ✅collection of all
sampling units that could be selected to be in your example.
Sampling unit - Correct Answers ✅unit that is selected at
random.
Sample - Correct Answers ✅collection of all sampling units
that were selected.
Observation unit - Correct Answers ✅unit you collect data
from.
Measurement variable - Correct Answers ✅type of data
you are collecting.
Measurement unit - Correct Answers ✅scale of the
measurement variable.
Descriptive statistics - Correct Answers ✅set of tools used
to describe the data in your sample. This includes calculating
quantitative description and creating graphs.
,NURS 323 (Stats) Midterm Exam
Questions and Answers (Latest 2026)
Inferential statistics - Correct Answers ✅set of tools used
to say something about the statistical population based on
your sample. This includes things like confidence intervals
and statistical tests.
observation unit, sampling unit, sample, statistical
population, population of interest - Correct Answers
✅What are the five hierarchal scales of statistics from
smallest to largest?
sampling - Correct Answers ✅first step of overall
framework. Creating the study design and collecting samples.
measuring - Correct Answers ✅second step of overall
framework. Taking measurements from observation units.
May be just a single measurement variable or multiple
measurement variables.
calculating descriptive statistics - Correct Answers ✅third
step of overall framework. Describing the data in the sample.
This may include calculating the average value of a
measurement variable in the data set, calculating variation
among measurements, or creating graphs.
calculating inferential statistics - Correct Answers ✅final
step of overall framework. Using the information contained in
data to draw a conclusion about the statistical population.
, NURS 323 (Stats) Midterm Exam
Questions and Answers (Latest 2026)
Sampling design - Correct Answers ✅description of all the
steps involved in collecting data from a statistical population.
all sampling units are selectable, selection is unbiased,
selection is independent, all samples are possible - Correct
Answers ✅What are the four goals a sampling design must
achieve?
inherent senses, geographic location - Correct Answers
✅There are two main ways bias can accidentally be
introduced in a study. They are sampling based on: __________
& __________.
Bias - Correct Answers ✅an over- or under-estimate of
some value from an average sample compared to the
statistical population.
Sampling independence - Correct Answers ✅when
selection of one sampling unit does not influence the
probability that any other sampling unit is selected.
causal - Correct Answers ✅The drawback of observational
studies is that relationships are not __________.
Questions and Answers (Latest 2026)
Population of interest - Correct Answers ✅population that
you hope to draw a conclusion about.
Statistical population - Correct Answers ✅collection of all
sampling units that could be selected to be in your example.
Sampling unit - Correct Answers ✅unit that is selected at
random.
Sample - Correct Answers ✅collection of all sampling units
that were selected.
Observation unit - Correct Answers ✅unit you collect data
from.
Measurement variable - Correct Answers ✅type of data
you are collecting.
Measurement unit - Correct Answers ✅scale of the
measurement variable.
Descriptive statistics - Correct Answers ✅set of tools used
to describe the data in your sample. This includes calculating
quantitative description and creating graphs.
,NURS 323 (Stats) Midterm Exam
Questions and Answers (Latest 2026)
Inferential statistics - Correct Answers ✅set of tools used
to say something about the statistical population based on
your sample. This includes things like confidence intervals
and statistical tests.
observation unit, sampling unit, sample, statistical
population, population of interest - Correct Answers
✅What are the five hierarchal scales of statistics from
smallest to largest?
sampling - Correct Answers ✅first step of overall
framework. Creating the study design and collecting samples.
measuring - Correct Answers ✅second step of overall
framework. Taking measurements from observation units.
May be just a single measurement variable or multiple
measurement variables.
calculating descriptive statistics - Correct Answers ✅third
step of overall framework. Describing the data in the sample.
This may include calculating the average value of a
measurement variable in the data set, calculating variation
among measurements, or creating graphs.
calculating inferential statistics - Correct Answers ✅final
step of overall framework. Using the information contained in
data to draw a conclusion about the statistical population.
, NURS 323 (Stats) Midterm Exam
Questions and Answers (Latest 2026)
Sampling design - Correct Answers ✅description of all the
steps involved in collecting data from a statistical population.
all sampling units are selectable, selection is unbiased,
selection is independent, all samples are possible - Correct
Answers ✅What are the four goals a sampling design must
achieve?
inherent senses, geographic location - Correct Answers
✅There are two main ways bias can accidentally be
introduced in a study. They are sampling based on: __________
& __________.
Bias - Correct Answers ✅an over- or under-estimate of
some value from an average sample compared to the
statistical population.
Sampling independence - Correct Answers ✅when
selection of one sampling unit does not influence the
probability that any other sampling unit is selected.
causal - Correct Answers ✅The drawback of observational
studies is that relationships are not __________.
