APPLIED HEALTHCARE STATISTICS
FINAL EXAM QUESTIONS AND
ANSWERS 100% PASS
response variables - correct answer-(y), possibly affected by the explanatory variables,
AKA dependent variables
two way frequency tables - correct answer-catagorical -> categorical
C -> C
rows show one variable's categories
columns show the other variable's categories
joint frequencies - correct answer-values in the middle of a two way frequency table ,
the data falling into both rows and columns
marginal frequencies - correct answer-values on the right and bottom side of a two way
frequency table, total of the corresponding row or column
grand total - correct answer-the bottom right corner of a two way frequency table, total
size of the data set
conditional percentages - correct answer-computed by dividing the joint frequency by
the corresponding marginal frequency in a two way frequency table
overall percentages - correct answer-computed by dividing each frequency by the grand
total
side by side box plots - correct answer-C -> Q, a box plot is displayed for each category
of the explanatory variable on the same graph
scatterplot - correct answer-Q -> Q
data create ordered pairs that are graphed ont he coordinate plane
, positive correlation - correct answer-scatterplot, Q -> Q
as the explanatory variable increases, the response variable increases
negative correlation - correct answer-scatterplot, Q -> Q
as the explanatory variable increases, the response variable decreases
no correlation - correct answer-scatterplot, Q -> Q
no trends between variables
non-linear relationship - correct answer-scatterplot, Q -> Q
scatterplot reveals a trend that is NOT a straight line
second quartile - correct answer-Q2
the median
first quartile - correct answer-Q1
the median of the data below Q2
third quartile - correct answer-Q3
the median of the data aboe Q3
standard deviation - correct answer-the average distance each data point is from the
mean
Empirical Rule - correct answer-for normal distributions
68% of data is within 1 standard deviation of the mean
95% of data is within 2 standard deviations of the mean
99.7% of data is within 3 standard deviations of the mean
Simpson's Paradox - correct answer--occurs when a result that appears in groups of
data disappears when the groups are combines
-can only occur when the sizes of the groups are inconsistent
lurking variables - correct answer-variable not included in the study but affects the
variable that are included in the study
FINAL EXAM QUESTIONS AND
ANSWERS 100% PASS
response variables - correct answer-(y), possibly affected by the explanatory variables,
AKA dependent variables
two way frequency tables - correct answer-catagorical -> categorical
C -> C
rows show one variable's categories
columns show the other variable's categories
joint frequencies - correct answer-values in the middle of a two way frequency table ,
the data falling into both rows and columns
marginal frequencies - correct answer-values on the right and bottom side of a two way
frequency table, total of the corresponding row or column
grand total - correct answer-the bottom right corner of a two way frequency table, total
size of the data set
conditional percentages - correct answer-computed by dividing the joint frequency by
the corresponding marginal frequency in a two way frequency table
overall percentages - correct answer-computed by dividing each frequency by the grand
total
side by side box plots - correct answer-C -> Q, a box plot is displayed for each category
of the explanatory variable on the same graph
scatterplot - correct answer-Q -> Q
data create ordered pairs that are graphed ont he coordinate plane
, positive correlation - correct answer-scatterplot, Q -> Q
as the explanatory variable increases, the response variable increases
negative correlation - correct answer-scatterplot, Q -> Q
as the explanatory variable increases, the response variable decreases
no correlation - correct answer-scatterplot, Q -> Q
no trends between variables
non-linear relationship - correct answer-scatterplot, Q -> Q
scatterplot reveals a trend that is NOT a straight line
second quartile - correct answer-Q2
the median
first quartile - correct answer-Q1
the median of the data below Q2
third quartile - correct answer-Q3
the median of the data aboe Q3
standard deviation - correct answer-the average distance each data point is from the
mean
Empirical Rule - correct answer-for normal distributions
68% of data is within 1 standard deviation of the mean
95% of data is within 2 standard deviations of the mean
99.7% of data is within 3 standard deviations of the mean
Simpson's Paradox - correct answer--occurs when a result that appears in groups of
data disappears when the groups are combines
-can only occur when the sizes of the groups are inconsistent
lurking variables - correct answer-variable not included in the study but affects the
variable that are included in the study
