Compare and contrast a bar chart, histogram, and frequency polygon.
What will be an ideal response?
A bar chart contains solid bars separated by spaces. It is a good tool for displaying the
distribution of varimeasured at the nominal level and other discrete categorical variables
because there is, in effect, a gap between each of the categories. Histograms, in which the
bars are adjacent, are used to display the distribution of quantitative variables that vary
along a continuum that has no necessary gaps. In a frequency polygon, a continuous line
connects the points representing the number or percentage of cases with each value. The
frequency polygon is an alternative to the histogram when the distribution of a
quantitative continuous variable must be displayed; this alternative is particularly useful
when the variable has a wide range of values.
cases, it is not affected in any way by extreme values. Because the mean is based on
adding the value of all the cases, it will be pulled in the direction of exceptionally high
(or low) values. When the value of the mean is larger than the median, we know that the
distribution is skewed in a positive direction, with proportionately more cases with higher
than lower values. When the mean is smaller than the median, the distribution is skewed
in a negative direction. The single most important influence on the choice of the median
or the mean should be the purpose of the statistical summary. If the purpose is to report
the middle position in one or more distributions, then the median is the appropriate
statistic regardless of whether the distribution is skewed.
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Diversity in practice exists within practitioners and among clients, colleagues, and service areas. In delivering services or interventions, an experienced social worker
a. integrates critical analysis of client traits, literature, and supporting evidence b. depends on textbooks for cultural information c. generalizes across a particular mental health disorder for all teenagers experiencing anxiety d. seeks temporary change
Identify and define the four ethical principles of patient care as outlined by the NASW.
What will be an ideal response?
In order to decrease the chance of false findings, researchers often conduct _____ to determine an optimal
sample size.
A. size analyses B. power analyses C. variable analyses D. group analyses
Who is the author of this research publication?
A) Michale Hammond B) Emile Durkheim C) W. Lawrence Neuman D) Chris F. Biga