WGU C785 OA 2025 EDITION EXAM TEST BANK
BIOCHEM EXAM QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE 2025.
Interpolation - CORRECT ANSWER Making predictions *within* the range of your data.
This is usually accurate.
Extrapolation - CORRECT ANSWER Making predictions *outside* of the range of your
data. This is generally a bad idea.
Simpson's Paradox - CORRECT ANSWER When split up, each data set can have a
pattern which goes away when all the data is combined.
Prospective study - CORRECT ANSWER Is a study that's done over time to find
results / A study watching for outcomes during the study period
Unbalanced response - CORRECT ANSWER Giving more options that are negative
than positive options (or vice versa) which biases the responses towards the more
common option
Histogram - CORRECT ANSWER A graphical representation -- bars, measuring the
frequency within each interval
Skewed right - CORRECT ANSWER Not a symmetric distribution, the tail is on the right
Measures of center - CORRECT ANSWER Median, the mean (and mode)
Measures of spread - CORRECT ANSWER Range, IQR & standard deviation
Standard Deviation Rule - CORRECT ANSWER 68% of the data are within 1 standard
deviation,
95% are within 2,
99.7% are within 3 standard deviations from the mean.
median (for center) & IQR (for spread) - CORRECT ANSWER skewed data uses these
for center and spread
Scatter plot - CORRECT ANSWER A graphical representation of Q ->
Q Two way table - CORRECT ANSWER A graphical representation of
C -> C
Side-by side box - CORRECT ANSWER A graphical representation of C -> Q
,WGU C785 OA 2025 EDITION EXAM TEST BANK
BIOCHEM EXAM QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE 2025.
Matched pairs - CORRECT ANSWER Grouping two similar subjects and giving
different treatments/procedures to each in order to compare the differences. For
example, having one twin take a medication while the other twin does not.
Population - CORRECT ANSWER The entire group you are trying to describe or
understand. Sampling frame - CORRECT ANSWER List of group from which you
choose your sample. Sample - CORRECT ANSWER The group that is actually picked
to be included in a study
Simple random sample - CORRECT ANSWER making a selection by following a
random pattern and selecting without replacement. Unbiased.
Systematic sample - CORRECT ANSWER Sample is selected by listing the sampling
frame, then making a selection by following a simple pattern (eg. Every 20th name).
Unbiased.
Voluntary sample - CORRECT ANSWER Members of the sample may choose not to
respond. Similar to Non Response.
Convenience sample - CORRECT ANSWER Participants are easy for researcher to
access. Tends to increase bias.
Cluster sample - CORRECT ANSWER Sample frame is divided into groups, we select
a few groups, then selecting ALL of the members of those groups.
Stratified sample - CORRECT ANSWER Sample frame is divided into groups. Then we
choose a random sample (usually the same size) from within EVERY group.
Multi-stage sample - CORRECT ANSWER Multiple rounds of randomness and
grouping. For example: randomly selecting a few groups, then choosing a small
random sample just those selected groups. Often a combination of Cluster and
Stratified Sampling.
P(A)*P(B) - CORRECT ANSWER independent events: P(A and
B) = P(A|B) - CORRECT ANSWER P(A and B) ÷ P(B)
P(A or B) - CORRECT ANSWER P(A) + P(B) - P(A and
B) P(A and B) - CORRECT ANSWER P(A)*P(B|A)
Box plot - CORRECT ANSWER an image that has 5 number
summary: min, Q1, median, Q3, max,
nCr = n! / r!(n - r)! - CORRECT ANSWER probability combination
,WGU C785 OA 2025 EDITION EXAM TEST BANK
BIOCHEM EXAM QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE 2025.
formula Boxplot - CORRECT ANSWER an image that has min, Q1,
median, Q3, max
, WGU C785 OA 2025 EDITION EXAM TEST BANK
BIOCHEM EXAM QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE 2025.
Histogram - CORRECT ANSWER A graphical representation -- bars, measuring the
frequency within each interval
Skewed right - CORRECT ANSWER Not a symmetric distribution, the tail is on the
right, i.e. extra stuff on the right
Measures of center - CORRECT ANSWER Median, the mean (and
mode) Measures of spread - CORRECT ANSWER Range, IQR &
standard deviation
Standard Deviation Rule - CORRECT ANSWER 68% of the data are within 1 standard
deviation, 95% are within 2, 99.7 are within 3 standard deviations from the mean.
For skewed data, use these for center and spread - CORRECT ANSWER In this
situation, we use median (for center) & IQR (for spread)
Explanatory variable - CORRECT ANSWER In a study, what we think is the
"cause" Response variable - CORRECT ANSWER In a study, what we think is
the "effect" Scatter plot - CORRECT ANSWER A graphical representation of Q -
>Q
Two way table - CORRECT ANSWER A graphical representation of C -
> C Side-by side box - CORRECT ANSWER A graphical representation
of C -> Q Linear relationship - CORRECT ANSWER "shaped like a line"
Correlation coefficient, r - CORRECT ANSWER Between -1 and 1; measures how
close the points are to the line and if the trend is uphill (positive) or downhill (negative).
r = -0.2, for example - CORRECT ANSWER This is an example of a correlation coefficient
that represents a weak negative correlation.
r = 0.9, for example - CORRECT ANSWER This is an example of a correlation
coefficient that represents a strong positive correlation.
Linear regression line - CORRECT ANSWER A line that fits the data as close as
possible, used to make predictions
Interpolation - CORRECT ANSWER Making predictions *within* the range of your data.
This is usually accurate.
Extrapolation - CORRECT ANSWER Making predictions *outside* of the range of your
BIOCHEM EXAM QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE 2025.
Interpolation - CORRECT ANSWER Making predictions *within* the range of your data.
This is usually accurate.
Extrapolation - CORRECT ANSWER Making predictions *outside* of the range of your
data. This is generally a bad idea.
Simpson's Paradox - CORRECT ANSWER When split up, each data set can have a
pattern which goes away when all the data is combined.
Prospective study - CORRECT ANSWER Is a study that's done over time to find
results / A study watching for outcomes during the study period
Unbalanced response - CORRECT ANSWER Giving more options that are negative
than positive options (or vice versa) which biases the responses towards the more
common option
Histogram - CORRECT ANSWER A graphical representation -- bars, measuring the
frequency within each interval
Skewed right - CORRECT ANSWER Not a symmetric distribution, the tail is on the right
Measures of center - CORRECT ANSWER Median, the mean (and mode)
Measures of spread - CORRECT ANSWER Range, IQR & standard deviation
Standard Deviation Rule - CORRECT ANSWER 68% of the data are within 1 standard
deviation,
95% are within 2,
99.7% are within 3 standard deviations from the mean.
median (for center) & IQR (for spread) - CORRECT ANSWER skewed data uses these
for center and spread
Scatter plot - CORRECT ANSWER A graphical representation of Q ->
Q Two way table - CORRECT ANSWER A graphical representation of
C -> C
Side-by side box - CORRECT ANSWER A graphical representation of C -> Q
,WGU C785 OA 2025 EDITION EXAM TEST BANK
BIOCHEM EXAM QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE 2025.
Matched pairs - CORRECT ANSWER Grouping two similar subjects and giving
different treatments/procedures to each in order to compare the differences. For
example, having one twin take a medication while the other twin does not.
Population - CORRECT ANSWER The entire group you are trying to describe or
understand. Sampling frame - CORRECT ANSWER List of group from which you
choose your sample. Sample - CORRECT ANSWER The group that is actually picked
to be included in a study
Simple random sample - CORRECT ANSWER making a selection by following a
random pattern and selecting without replacement. Unbiased.
Systematic sample - CORRECT ANSWER Sample is selected by listing the sampling
frame, then making a selection by following a simple pattern (eg. Every 20th name).
Unbiased.
Voluntary sample - CORRECT ANSWER Members of the sample may choose not to
respond. Similar to Non Response.
Convenience sample - CORRECT ANSWER Participants are easy for researcher to
access. Tends to increase bias.
Cluster sample - CORRECT ANSWER Sample frame is divided into groups, we select
a few groups, then selecting ALL of the members of those groups.
Stratified sample - CORRECT ANSWER Sample frame is divided into groups. Then we
choose a random sample (usually the same size) from within EVERY group.
Multi-stage sample - CORRECT ANSWER Multiple rounds of randomness and
grouping. For example: randomly selecting a few groups, then choosing a small
random sample just those selected groups. Often a combination of Cluster and
Stratified Sampling.
P(A)*P(B) - CORRECT ANSWER independent events: P(A and
B) = P(A|B) - CORRECT ANSWER P(A and B) ÷ P(B)
P(A or B) - CORRECT ANSWER P(A) + P(B) - P(A and
B) P(A and B) - CORRECT ANSWER P(A)*P(B|A)
Box plot - CORRECT ANSWER an image that has 5 number
summary: min, Q1, median, Q3, max,
nCr = n! / r!(n - r)! - CORRECT ANSWER probability combination
,WGU C785 OA 2025 EDITION EXAM TEST BANK
BIOCHEM EXAM QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE 2025.
formula Boxplot - CORRECT ANSWER an image that has min, Q1,
median, Q3, max
, WGU C785 OA 2025 EDITION EXAM TEST BANK
BIOCHEM EXAM QUESTIONS AND CORRECT
ANSWERS LATEST UPDATE 2025.
Histogram - CORRECT ANSWER A graphical representation -- bars, measuring the
frequency within each interval
Skewed right - CORRECT ANSWER Not a symmetric distribution, the tail is on the
right, i.e. extra stuff on the right
Measures of center - CORRECT ANSWER Median, the mean (and
mode) Measures of spread - CORRECT ANSWER Range, IQR &
standard deviation
Standard Deviation Rule - CORRECT ANSWER 68% of the data are within 1 standard
deviation, 95% are within 2, 99.7 are within 3 standard deviations from the mean.
For skewed data, use these for center and spread - CORRECT ANSWER In this
situation, we use median (for center) & IQR (for spread)
Explanatory variable - CORRECT ANSWER In a study, what we think is the
"cause" Response variable - CORRECT ANSWER In a study, what we think is
the "effect" Scatter plot - CORRECT ANSWER A graphical representation of Q -
>Q
Two way table - CORRECT ANSWER A graphical representation of C -
> C Side-by side box - CORRECT ANSWER A graphical representation
of C -> Q Linear relationship - CORRECT ANSWER "shaped like a line"
Correlation coefficient, r - CORRECT ANSWER Between -1 and 1; measures how
close the points are to the line and if the trend is uphill (positive) or downhill (negative).
r = -0.2, for example - CORRECT ANSWER This is an example of a correlation coefficient
that represents a weak negative correlation.
r = 0.9, for example - CORRECT ANSWER This is an example of a correlation
coefficient that represents a strong positive correlation.
Linear regression line - CORRECT ANSWER A line that fits the data as close as
possible, used to make predictions
Interpolation - CORRECT ANSWER Making predictions *within* the range of your data.
This is usually accurate.
Extrapolation - CORRECT ANSWER Making predictions *outside* of the range of your
