Descriptive numerial measure Flashcards
If the measures are computed
for data from a sample,
they are called
sample statistics.
If the measures are computed
for data from a population,
they are called
population parameters.
A sample statistic is referred to
as the _______ of the
corresponding population parameter
point estimator
Perhaps the most important measure of location is
the
mean.
The _______ of a data set is the value in the middle
when the data items are arranged in ascending order.
median
Another measure, sometimes used when extreme
values are present, is the
trimmed mean.
The ______ of a data set is the value that occurs with
greatest frequency.
mode
A ______ provides information about how the
data are spread over the interval from the smallest
value to the largest value.
percentile
are specific percentiles.
Quartiles
The ____ of a data set is the difference between the
largest and smallest data values.
range
The _________ of a data set is the difference
between the third quartile and the first quartile
interquartile range
The _)_________ is a measure of variability that utilizes
all the data.
variance
The _________ of a data set is the positive
square root of the variance.
standard deviation
The ________ indicates how large the
standard deviation is in relation to the mean.
coefficient of variation
The _____ is often called the standardized value
z-score
