D514 Exam Study Guide Questions with Correct
Answers
ANOVA test - ✔✔may be used in the research studies where there are two or more
groups to compare
Chi-square tests - ✔✔test which determines if an association exists between two
categorical variables
Control group - ✔✔in a healthcare environment, this group of patients does not receive
the treatment that is being studied
Experimental group - ✔✔this group of patients receives the treatment being studied
with follow up observation to determine the effect of the treatment
F-test - ✔✔this is designed to test if two population variances are equal. The ration of
the two variances is compared; if they are equal, the ration of the variances is 1
Frequency - ✔✔these measure how often a particular value occurs to assess the
importance of a value or check the variation of values in a study
Hypothesis - ✔✔a proposed explanation for an observation that leads to a prediction;
this will be confirmed or rejected after investigation and data collection
Integrity - ✔✔research always makes some assumptions which must be identified to
determine breaches of this
Interval data - ✔✔this includes units of equal size such as IQ results; there is no zero
point
, What is an example of interval scale? - ✔✔TIME; time is measured in 24 hours each day
and the time between each hour is the same- 60 minutes
Mean - ✔✔the arithmetic average of a distribution, obtained by adding the scores and
then dividing by the number of scores
Median - ✔✔the midpoint of the distribution of values, or the point above or below
which 50% of the values fall
Methods section components - ✔✔When analyzing the quality of a study, a careful
evaluation of the research methods can reveal critical details about population and sample,
co-variables and hypothesis, data presentation, statistical analysis, and study limitations.
Misleading Statistics - ✔✔Interpreting and presenting the results of data analysis affords
opportunities for accidental or deliberate misrepresentation of data. Examples: implying
causation, relying on biases or incomplete sample, using inappropriate graphical
representations
Mode - ✔✔The value that occurs most frequently in a given data set.
Multivariate Regression analyses - ✔✔used to analyze and adjust risk; this model
contrasts each measured factor to the patient's risk of a particular outcome
Nominal Data - ✔✔data measured as a frequency or percentage, and the mean of these
data cannot be calculated. In healthcare, this data might include demographic information
about patients.
Ordinal data - ✔✔data measured as a frequency, and the mean of is often calculated. In
healthcare, this data might include patient satisfaction surveys using a Likert scale.
Answers
ANOVA test - ✔✔may be used in the research studies where there are two or more
groups to compare
Chi-square tests - ✔✔test which determines if an association exists between two
categorical variables
Control group - ✔✔in a healthcare environment, this group of patients does not receive
the treatment that is being studied
Experimental group - ✔✔this group of patients receives the treatment being studied
with follow up observation to determine the effect of the treatment
F-test - ✔✔this is designed to test if two population variances are equal. The ration of
the two variances is compared; if they are equal, the ration of the variances is 1
Frequency - ✔✔these measure how often a particular value occurs to assess the
importance of a value or check the variation of values in a study
Hypothesis - ✔✔a proposed explanation for an observation that leads to a prediction;
this will be confirmed or rejected after investigation and data collection
Integrity - ✔✔research always makes some assumptions which must be identified to
determine breaches of this
Interval data - ✔✔this includes units of equal size such as IQ results; there is no zero
point
, What is an example of interval scale? - ✔✔TIME; time is measured in 24 hours each day
and the time between each hour is the same- 60 minutes
Mean - ✔✔the arithmetic average of a distribution, obtained by adding the scores and
then dividing by the number of scores
Median - ✔✔the midpoint of the distribution of values, or the point above or below
which 50% of the values fall
Methods section components - ✔✔When analyzing the quality of a study, a careful
evaluation of the research methods can reveal critical details about population and sample,
co-variables and hypothesis, data presentation, statistical analysis, and study limitations.
Misleading Statistics - ✔✔Interpreting and presenting the results of data analysis affords
opportunities for accidental or deliberate misrepresentation of data. Examples: implying
causation, relying on biases or incomplete sample, using inappropriate graphical
representations
Mode - ✔✔The value that occurs most frequently in a given data set.
Multivariate Regression analyses - ✔✔used to analyze and adjust risk; this model
contrasts each measured factor to the patient's risk of a particular outcome
Nominal Data - ✔✔data measured as a frequency or percentage, and the mean of these
data cannot be calculated. In healthcare, this data might include demographic information
about patients.
Ordinal data - ✔✔data measured as a frequency, and the mean of is often calculated. In
healthcare, this data might include patient satisfaction surveys using a Likert scale.
