Elementary Statistics - FINAL EXAM
_
P(A) + P(A) = 1 is one way to express the _________________. - ---------------ANS:
rule of complementary events
____________ is NOT a measure of center - ---------------ANS: census
______________ are sample values that lie very far away from the majority of the
other sample values. - ---------------ANS: outliers
________________ is found by subtracting a lower class limit from the next
consecutive lower class limit. - ---------------ANS: class width
A ____________ helps us understand the nature of the distribution of a data set. -
---------------ANS: frequency distribution
A _______________ random variable has either a finite or a countable number of
values.
(can count) - ---------------ANS: discrete
A _______________ variable is a variable that has a single numerical value,
determined by chance, for each outcome of a procedure.
(represent by x) - ---------------ANS: random
A ________________ random variable has infinitely many values associated with
measurements.
(time, inches, length) - ---------------ANS: continuous
A _________________ is a procedure for testing a claim about property of a
population. - ---------------ANS: hypothesis test
A ____________________ is any event combining two or more simple events. -
---------------ANS: compound event
A ______________has the same shape and horizontal ( l ) scale as a histogram but
the vertical (-----)scale is marked with the relative frequencies instead of actual
frequencies. - ---------------ANS: relative frequency histogram
A data value is considered ______________ if its z-score is less than -2 or greater
than 2. - ---------------ANS: unusual
, A histogram aids in analyzing the __________________________ of the data -
---------------ANS: shape of the distribution
A main goal in statistics is to interpret and understand the meaning of statistical
values. The _______________ can be very helpful in understanding the meaning of
the mean and standard deviation. - ---------------ANS: Range Rule of Thumb
a numerical measurement describing some characteristic of a sample -
---------------ANS: statistic
A subset of a population containing individuals who are actually observed. -
---------------ANS: Sample
A value at the center or middle of a data set is a(n) ______________________. -
---------------ANS: measure of center
A value at the center or middle of a data set is a(n) ______________________. -
---------------ANS: measure of center
A(n) _______________ distribution has a "bell" shape. - ---------------ANS: normal
All events are equally likely in any probability procedure - ---------------ANS: NOT A
PRINCIPLE OF PROBABILITY
As a procedure is repeated again and again, the relative frequency of an event tends
to approach the actual probability. This is known as
__________________________. - ---------------ANS: the law of large numbers
collection of data every member of population - ---------------ANS: census
collection of observations, measurements, gender or survey responses single data. -
---------------ANS: data
data collect in the future from groups that share common factors - ---------------ANS:
prospective (or longitudinal or cohort) study
data collected from past time period - ---------------ANS: retrospective (case control)
study
data observed measured and collected at one point in time NOT over a period of
time - ---------------ANS: cross-sectional study
DOES NOT describe the standard normal distribution - ---------------ANS: The graph
is uniform
_
P(A) + P(A) = 1 is one way to express the _________________. - ---------------ANS:
rule of complementary events
____________ is NOT a measure of center - ---------------ANS: census
______________ are sample values that lie very far away from the majority of the
other sample values. - ---------------ANS: outliers
________________ is found by subtracting a lower class limit from the next
consecutive lower class limit. - ---------------ANS: class width
A ____________ helps us understand the nature of the distribution of a data set. -
---------------ANS: frequency distribution
A _______________ random variable has either a finite or a countable number of
values.
(can count) - ---------------ANS: discrete
A _______________ variable is a variable that has a single numerical value,
determined by chance, for each outcome of a procedure.
(represent by x) - ---------------ANS: random
A ________________ random variable has infinitely many values associated with
measurements.
(time, inches, length) - ---------------ANS: continuous
A _________________ is a procedure for testing a claim about property of a
population. - ---------------ANS: hypothesis test
A ____________________ is any event combining two or more simple events. -
---------------ANS: compound event
A ______________has the same shape and horizontal ( l ) scale as a histogram but
the vertical (-----)scale is marked with the relative frequencies instead of actual
frequencies. - ---------------ANS: relative frequency histogram
A data value is considered ______________ if its z-score is less than -2 or greater
than 2. - ---------------ANS: unusual
, A histogram aids in analyzing the __________________________ of the data -
---------------ANS: shape of the distribution
A main goal in statistics is to interpret and understand the meaning of statistical
values. The _______________ can be very helpful in understanding the meaning of
the mean and standard deviation. - ---------------ANS: Range Rule of Thumb
a numerical measurement describing some characteristic of a sample -
---------------ANS: statistic
A subset of a population containing individuals who are actually observed. -
---------------ANS: Sample
A value at the center or middle of a data set is a(n) ______________________. -
---------------ANS: measure of center
A value at the center or middle of a data set is a(n) ______________________. -
---------------ANS: measure of center
A(n) _______________ distribution has a "bell" shape. - ---------------ANS: normal
All events are equally likely in any probability procedure - ---------------ANS: NOT A
PRINCIPLE OF PROBABILITY
As a procedure is repeated again and again, the relative frequency of an event tends
to approach the actual probability. This is known as
__________________________. - ---------------ANS: the law of large numbers
collection of data every member of population - ---------------ANS: census
collection of observations, measurements, gender or survey responses single data. -
---------------ANS: data
data collect in the future from groups that share common factors - ---------------ANS:
prospective (or longitudinal or cohort) study
data collected from past time period - ---------------ANS: retrospective (case control)
study
data observed measured and collected at one point in time NOT over a period of
time - ---------------ANS: cross-sectional study
DOES NOT describe the standard normal distribution - ---------------ANS: The graph
is uniform
