JMU MATH 105 Final Exam Latest Update 2025-
2026 190 Questions and 100% Verified Correct
Answers Guaranteed A+
baseline risk - CORRECT ANSWER: risk without the treatment or behavior
bell-shaped data set - CORRECT ANSWER: picture is symmetrical and shaped like a
bell
biased measurement - CORRECT ANSWER: systematically off the mark in the same
direction
bimodal - CORRECT ANSWER: if there are two prominent peaks in a histogram or stem
plot
boxplot - CORRECT ANSWER: simple picture also allows easy comparison of the
center and spread of data collected for two or more groups.
case study: In-depth examination of one or all small number individuals - CORRECT
ANSWER:
case-control study - CORRECT ANSWER: an attempt to include an appropriate control
group. two existing groups differing in outcome are identified and compared on the
basis of some supposed causal attribute.
Categorical variable - CORRECT ANSWER: Qualitative, nominal, ordinal, pie charts
census - CORRECT ANSWER: survey in which the entire population is measured
(could take years)
,chi-square test - CORRECT ANSWER: used to determine whether the evidence
provided in a contingence table is strong enough to conclude that the alternative
hypothesis is true
Closed questions - CORRECT ANSWER: List of choices to pick their answers from
cluster sampling - CORRECT ANSWER: population units are divided into groups, but
rather than sampling within each group we select a random sample of clusters and
measure only those clusters
cofounding variable - CORRECT ANSWER: related to the explanatory variable in the
sense that individuals who differ for the explanatory variable are also likely to differ for
the cofounding variable. Affects the response variable
confidence interval - CORRECT ANSWER: an interval of values computed from sample
data that is almost sure to cover the true population number
contingency tables - CORRECT ANSWER: displays the counts of how many individuals
fall into the possible combinations of categories for two categorical variables
continuous variable - CORRECT ANSWER: it would take forever to count or anything
within that given interval (age)
control groups - CORRECT ANSWER: identical to the treatment group except they don't
receive the treatment
convenience sample - CORRECT ANSWER: selecting a sample due to ease
Correlation - CORRECT ANSWER: Relationship between two variables
, Data - CORRECT ANSWER: Collection of numbers or other pieces of information that
has been given meaning
Deliberate Bias - CORRECT ANSWER: questions worded to elicit a specific response to
support a certain cause
descriptive statistic - CORRECT ANSWER: summary of statistics that quantitively
summarizes the collection of information (graphs, %, numbers)
detrended time series - CORRECT ANSWER: when we remove the linear trend in a
time series
discrete variable - CORRECT ANSWER: countable for a finite amount of time (car
accidents (1, 2, 3, etc))
double blind - CORRECT ANSWER: researchers don't know who is the control or
treatment group
effect modifier - CORRECT ANSWER: modifies the effect of the explanatory variable
and the outcome (eg, men vs. women)
empirical rule (68%) - CORRECT ANSWER: values fall within 1 standard deviation of
the mean in either direction
empirical rule (95%) - CORRECT ANSWER: the values fall within 2 standard deviations
of the mean in either direction
empirical rule (99.7%) - CORRECT ANSWER: the values fall within 3 standard
deviations of the mean in either direction
2026 190 Questions and 100% Verified Correct
Answers Guaranteed A+
baseline risk - CORRECT ANSWER: risk without the treatment or behavior
bell-shaped data set - CORRECT ANSWER: picture is symmetrical and shaped like a
bell
biased measurement - CORRECT ANSWER: systematically off the mark in the same
direction
bimodal - CORRECT ANSWER: if there are two prominent peaks in a histogram or stem
plot
boxplot - CORRECT ANSWER: simple picture also allows easy comparison of the
center and spread of data collected for two or more groups.
case study: In-depth examination of one or all small number individuals - CORRECT
ANSWER:
case-control study - CORRECT ANSWER: an attempt to include an appropriate control
group. two existing groups differing in outcome are identified and compared on the
basis of some supposed causal attribute.
Categorical variable - CORRECT ANSWER: Qualitative, nominal, ordinal, pie charts
census - CORRECT ANSWER: survey in which the entire population is measured
(could take years)
,chi-square test - CORRECT ANSWER: used to determine whether the evidence
provided in a contingence table is strong enough to conclude that the alternative
hypothesis is true
Closed questions - CORRECT ANSWER: List of choices to pick their answers from
cluster sampling - CORRECT ANSWER: population units are divided into groups, but
rather than sampling within each group we select a random sample of clusters and
measure only those clusters
cofounding variable - CORRECT ANSWER: related to the explanatory variable in the
sense that individuals who differ for the explanatory variable are also likely to differ for
the cofounding variable. Affects the response variable
confidence interval - CORRECT ANSWER: an interval of values computed from sample
data that is almost sure to cover the true population number
contingency tables - CORRECT ANSWER: displays the counts of how many individuals
fall into the possible combinations of categories for two categorical variables
continuous variable - CORRECT ANSWER: it would take forever to count or anything
within that given interval (age)
control groups - CORRECT ANSWER: identical to the treatment group except they don't
receive the treatment
convenience sample - CORRECT ANSWER: selecting a sample due to ease
Correlation - CORRECT ANSWER: Relationship between two variables
, Data - CORRECT ANSWER: Collection of numbers or other pieces of information that
has been given meaning
Deliberate Bias - CORRECT ANSWER: questions worded to elicit a specific response to
support a certain cause
descriptive statistic - CORRECT ANSWER: summary of statistics that quantitively
summarizes the collection of information (graphs, %, numbers)
detrended time series - CORRECT ANSWER: when we remove the linear trend in a
time series
discrete variable - CORRECT ANSWER: countable for a finite amount of time (car
accidents (1, 2, 3, etc))
double blind - CORRECT ANSWER: researchers don't know who is the control or
treatment group
effect modifier - CORRECT ANSWER: modifies the effect of the explanatory variable
and the outcome (eg, men vs. women)
empirical rule (68%) - CORRECT ANSWER: values fall within 1 standard deviation of
the mean in either direction
empirical rule (95%) - CORRECT ANSWER: the values fall within 2 standard deviations
of the mean in either direction
empirical rule (99.7%) - CORRECT ANSWER: the values fall within 3 standard
deviations of the mean in either direction
