AP STATISTICS UNIT 5 PROGRESS CHECK MCQ PART EXAM PREP
QUESTIONS AND ANSWERS
◉ matched pairs. Answer: an observational technique that involves
matching each participant in the experimental group with a specific
participant in the control group in order to eliminate the possibility
that a third variable (and not the independent variable) caused
changes in the dependent variable
◉ conditional prabability. Answer: probability given that something
else has already occurred
◉ sample space. Answer: Set of all possible outcomes of an
experiment
◉ confounded variable. Answer: A variable whose effect on the
response variable cannot be separated from the effect of the
explanatory variable on the response variable. (Note: Usually
confounded variables are lurking variables but only a few lurking
variables are also confounded.)
◉ marginal frequency. Answer: A set of intervals, usually adjacent
and of equal width, into which the range of a statistical distribution
, is divided, each associated with a frequency indicating the number
of measurements in that interval.
◉ coefficient of determination. Answer: The statistic or number
determined by squaring the correlation coefficient. Represents the
amount of variance accounted for by that correlation.
Statistic that represents amount of variance accounted for by a
correlation.
◉ binomial. Answer: A two-name naming system.
◉ unimodal. Answer: having one mode; this is a useful term for
describing the shape of a histogram when it's generally mound-
shaped
a data set with one mode such
a normal distribution usually has only one mode
QUESTIONS AND ANSWERS
◉ matched pairs. Answer: an observational technique that involves
matching each participant in the experimental group with a specific
participant in the control group in order to eliminate the possibility
that a third variable (and not the independent variable) caused
changes in the dependent variable
◉ conditional prabability. Answer: probability given that something
else has already occurred
◉ sample space. Answer: Set of all possible outcomes of an
experiment
◉ confounded variable. Answer: A variable whose effect on the
response variable cannot be separated from the effect of the
explanatory variable on the response variable. (Note: Usually
confounded variables are lurking variables but only a few lurking
variables are also confounded.)
◉ marginal frequency. Answer: A set of intervals, usually adjacent
and of equal width, into which the range of a statistical distribution
, is divided, each associated with a frequency indicating the number
of measurements in that interval.
◉ coefficient of determination. Answer: The statistic or number
determined by squaring the correlation coefficient. Represents the
amount of variance accounted for by that correlation.
Statistic that represents amount of variance accounted for by a
correlation.
◉ binomial. Answer: A two-name naming system.
◉ unimodal. Answer: having one mode; this is a useful term for
describing the shape of a histogram when it's generally mound-
shaped
a data set with one mode such
a normal distribution usually has only one mode
