Exam Question And Answers 2024
incidence rate - correct answers✅would be used if we
want to measure the proportion of health workers who
acquire Ebola from working with Ebola patients
percentile - correct answers✅indicates the percent of
the population that falls below a certain value
standard score - correct answers✅for a particular data
point, represents the distance from the mean in terms of
standard deviations
Analysis of variance (ANOVA) - correct answers✅is
used to determine if three or more sample means are
statistically not all equal
norm reference test - correct answers✅is a test that
compares an individual to other individuals on the bell-
shaped curve
criterion referenced test - correct answers✅compares
an individual to certain defined standards
observed score - correct answers✅is the score actually
achieved by an individual on a test.
, WGU C207 STUDY GUIDE MODULE 5 & 6
Exam Question And Answers 2024
true score - correct answers✅is the average score an
individual would achieve if he or she were to take the test
infinite times
random measurement error - correct answers✅can
eventually be eliminated over time as the number of tests
increases (according to Classic Test Theory)
systematic measurement error - correct
answers✅occurs when something that is entirely
unrelated to the test is affecting test scores
item response theory - correct answers✅takes into
account that different questions may have different levels
of difficulty
reliability index - correct answers✅measures how well
a person's observed score on a test represents that
person's true score
test retest method - correct answers✅applies when the
same test is given to the same sample on two different
occasions