WGU D514 Exam prep questions well
answers 2025-2026
Nominal data - ANS ✔✔names, labels, or distinguishing numbers
ex: gender, hair color, zip code
Ordinal data - ANS ✔✔order or rank
ex: satisfaction survey
Discrete data - ANS ✔✔usually expressed by a whole number
ex: number of children in a family
Continuous data - ANS ✔✔measured to the nearest
ex: body temperature, weight, height
t-test - ANS ✔✔applies two different interventions on subjects split into two groups
ex: 100 patients with chronic migraines, one group receives pharmaceutical intervention and
the other receives injections
chi-square - ANS ✔✔looks for relationships between categorical variables. you cannot put the
variables into an order
ex: relationship between depression and cardiac event
, ANOVA - ANS ✔✔compares more than two "like" groups using same different interventions
ex: anterior knee pain. one group uses ice pack to reduce pain and another receives an
ultrasound three times a week, and another takes 500 mg Advil daily
Wilcoxon Signed-Rank test - ANS ✔✔looks for differences between two sets of scores with the
same participants.
ex: men with lung cancer who see the same oncologists or women with lung cancer who are
tested every six months.
National Practitioner Data Bank (NPDB) - ANS ✔✔for credentialing new providers, looks at past
employment and for any legal issues/ concerns for their past
National Center for Health Statistics - ANS ✔✔operates through CDC, vital statistics such as
birth, death, marriage, divorce, fetal deaths
MEDPAR - ANS ✔✔acute care and SNF claims data on patients using medicare
Health Resources and Services Administration - ANS ✔✔improves healthcare to those in rural
areas, medically or economically vulnerable
ANOVA - ANS ✔✔used to compare multiple interventions on a "like" group
t-test - ANS ✔✔which group is more effective X or Y
Pearson's Correlation Coefficient - ANS ✔✔tests relationship between interval or ratio data
answers 2025-2026
Nominal data - ANS ✔✔names, labels, or distinguishing numbers
ex: gender, hair color, zip code
Ordinal data - ANS ✔✔order or rank
ex: satisfaction survey
Discrete data - ANS ✔✔usually expressed by a whole number
ex: number of children in a family
Continuous data - ANS ✔✔measured to the nearest
ex: body temperature, weight, height
t-test - ANS ✔✔applies two different interventions on subjects split into two groups
ex: 100 patients with chronic migraines, one group receives pharmaceutical intervention and
the other receives injections
chi-square - ANS ✔✔looks for relationships between categorical variables. you cannot put the
variables into an order
ex: relationship between depression and cardiac event
, ANOVA - ANS ✔✔compares more than two "like" groups using same different interventions
ex: anterior knee pain. one group uses ice pack to reduce pain and another receives an
ultrasound three times a week, and another takes 500 mg Advil daily
Wilcoxon Signed-Rank test - ANS ✔✔looks for differences between two sets of scores with the
same participants.
ex: men with lung cancer who see the same oncologists or women with lung cancer who are
tested every six months.
National Practitioner Data Bank (NPDB) - ANS ✔✔for credentialing new providers, looks at past
employment and for any legal issues/ concerns for their past
National Center for Health Statistics - ANS ✔✔operates through CDC, vital statistics such as
birth, death, marriage, divorce, fetal deaths
MEDPAR - ANS ✔✔acute care and SNF claims data on patients using medicare
Health Resources and Services Administration - ANS ✔✔improves healthcare to those in rural
areas, medically or economically vulnerable
ANOVA - ANS ✔✔used to compare multiple interventions on a "like" group
t-test - ANS ✔✔which group is more effective X or Y
Pearson's Correlation Coefficient - ANS ✔✔tests relationship between interval or ratio data
