1) The process of using sample statistics to draw conclusions about true population parameters is
A) statistical inference.
B) the scientific method.
D) descriptive statistics.
2) Those methods involving the collection, prese
correlation coefficient (r):
A measure of the strength of the linear relationship between x and y
that does not depend on the units in which x and y are measured.
Data that are observed at a single point in time. (page 361
not equal to
A statement that will be accepted only if there is convincing sam
A curve that is defined so that the probability that a random variable
will be in a specified interval of numbers is the area under the curve
corresponding to the interval. (page 147)
central limit theorem: A theorem telling us that when the sample size n is sufficiently large,
then the population of all possible sample means is approximately
normally distributed no matter what probability distribution describes the
expected value (of a
The probability distribution that describes a binomial random variable.
A graphical display of categorical data (data in categories) made up of
vertical or horizontal bars. (page 62)
A graphical portrayal of a data set that depicts both the central
display (box plot):
tendency and variability of th
A variable with values that indicate into which of several categories a
population unit belongs. (page 2)
An examination of all the units i
A variable that takes on the value 0 or 1 and is used to describe the effects
of the different levels of a qualitative independent variable in a regression
model. (page 454)
The range of the previously observed combinations of