NURSING RESEARCH - CHAPTER 16 - ELSEVIER
QUESTIONS WITH VERIFIED ANSWERS. STUDY THIS
ONE
correlation - CORRECT ANSWERS-The degree of association between two variables
degrees of freedom - CORRECT ANSWERS-The number of quantities that are unknown minus
the number of independent equations linking these unknowns; a function of the number in the sample
descriptive statistics - CORRECT ANSWERS-Statistical methods used to describe and summarize
sample data
dichotomous variable - CORRECT ANSWERS-A nominal variable that has two categories (e.g.,
male/female)
factor analysis - CORRECT ANSWERS-A type of validity that uses a statistical procedure for
determining the underlying dimensions or components of a variable
Fisher's exact probability test - CORRECT ANSWERS-A test used to compare frequencies when
samples are small and expected frequencies are less than six in each cell
frequency distribution - CORRECT ANSWERS-Descriptive statistical method for summarizing the
occurrences of events under study.
inferential statistics - CORRECT ANSWERS-Procedures that combine mathematical processes and
logic to test hypotheses about a population with the help of sample data
interval measurement - CORRECT ANSWERS-Level used to show rankings of events or objects on
a scale with equal intervals between numbers but with an arbitrary zero (e.g., centigrade temperature)
levels of measurement - CORRECT ANSWERS-Categorization of the precision with which an
event can be measured (nominal, ordinal, interval and ratio)
, analysis of covariance - CORRECT ANSWERS-A statistic that measures differences among group
means and uses a statistical technique to equate the groups under study in relation to an important
variable
analysis of variance - CORRECT ANSWERS-A statistic that tests whether group means differ from
each other, rather than testing each pair of means separately, ANOVA considers the variation among all
groups
categorial variable - CORRECT ANSWERS-A variable that has mutually exclusive categories but
has more than two values
chi-square (X2) - CORRECT ANSWERS-A nonparametric statistic that is used to determine
whether the frequency found in each category is different from the frequency that would be expected by
chance
continuous variable - CORRECT ANSWERS-A variable that can take on any value between two
specified points (e.g., weight)
level of significance (alpha level) - CORRECT ANSWERS-The risk of making a type I error, set by
the researcher before the study begins
mean - CORRECT ANSWERS-A measure of central tendency; the arithmetic average of all scores
measures of central tendency - CORRECT ANSWERS-Descriptive statistical procedure that
describes the average member of a sample (mean, median, and mode)
measures of variability - CORRECT ANSWERS-Descriptive statistical procedure that describes
how much dispersion there is in sample data
median - CORRECT ANSWERS-A measure of central tendency; the middle score
modality - CORRECT ANSWERS-The number of peaks in a frequency distribution
QUESTIONS WITH VERIFIED ANSWERS. STUDY THIS
ONE
correlation - CORRECT ANSWERS-The degree of association between two variables
degrees of freedom - CORRECT ANSWERS-The number of quantities that are unknown minus
the number of independent equations linking these unknowns; a function of the number in the sample
descriptive statistics - CORRECT ANSWERS-Statistical methods used to describe and summarize
sample data
dichotomous variable - CORRECT ANSWERS-A nominal variable that has two categories (e.g.,
male/female)
factor analysis - CORRECT ANSWERS-A type of validity that uses a statistical procedure for
determining the underlying dimensions or components of a variable
Fisher's exact probability test - CORRECT ANSWERS-A test used to compare frequencies when
samples are small and expected frequencies are less than six in each cell
frequency distribution - CORRECT ANSWERS-Descriptive statistical method for summarizing the
occurrences of events under study.
inferential statistics - CORRECT ANSWERS-Procedures that combine mathematical processes and
logic to test hypotheses about a population with the help of sample data
interval measurement - CORRECT ANSWERS-Level used to show rankings of events or objects on
a scale with equal intervals between numbers but with an arbitrary zero (e.g., centigrade temperature)
levels of measurement - CORRECT ANSWERS-Categorization of the precision with which an
event can be measured (nominal, ordinal, interval and ratio)
, analysis of covariance - CORRECT ANSWERS-A statistic that measures differences among group
means and uses a statistical technique to equate the groups under study in relation to an important
variable
analysis of variance - CORRECT ANSWERS-A statistic that tests whether group means differ from
each other, rather than testing each pair of means separately, ANOVA considers the variation among all
groups
categorial variable - CORRECT ANSWERS-A variable that has mutually exclusive categories but
has more than two values
chi-square (X2) - CORRECT ANSWERS-A nonparametric statistic that is used to determine
whether the frequency found in each category is different from the frequency that would be expected by
chance
continuous variable - CORRECT ANSWERS-A variable that can take on any value between two
specified points (e.g., weight)
level of significance (alpha level) - CORRECT ANSWERS-The risk of making a type I error, set by
the researcher before the study begins
mean - CORRECT ANSWERS-A measure of central tendency; the arithmetic average of all scores
measures of central tendency - CORRECT ANSWERS-Descriptive statistical procedure that
describes the average member of a sample (mean, median, and mode)
measures of variability - CORRECT ANSWERS-Descriptive statistical procedure that describes
how much dispersion there is in sample data
median - CORRECT ANSWERS-A measure of central tendency; the middle score
modality - CORRECT ANSWERS-The number of peaks in a frequency distribution
