Did the authors present any measures of dispersion in a table? What measures of
dispersion were used, and what information did it tell us? Discuss why this measure of
dispersion was used instead of the other options.
Based on the article and only Table 1, measures of dispersion were present. Regarding the
independent variable, a measure of dispersion in the table is standard deviation, being 1.45,
which is the square root of squared deviation regarding the mean of 2.68, the average lifetime
history of two of the nine behavioral indicators of low self-control. standard of deviation and
somewhat the range are present in Table 1. The other measures of dispersion that were not used
instead of the other options were variance, interquartile range (IQR), mean deviation, and the
coefficient of variation. Standard deviation and range were used instead of the other options
because the standard deviation is mathematically robust as opposed to the others, can help
identify potential outliers.
What is the INDEPENDENT variable?
What is the mean of this variable? What is the
standard deviation of this variable?
Did the authors use appropriate measures of
dispersion for this variable? What other measures of dispersion could the
authors have also used and why? If the authors have used the mean and
standard deviation, perform some calculations to determine the range of scores
on the independent variable in which 95.44% of the scores fall. Hint: remember
that about 95% of the scores fall within 2 standard deviations above and below
the mean.
The independent is low self-control. The mean of this variable is 2.68. The
standard deviation of this variable is 1.45
What is the dependent variable? What is the mean of this variable? What is the standard
deviation of this variable? Did the authors use appropriate measures of dispersion for this
variable? What other measures of dispersion could the authors have also used and why? If
the authors have used the mean and standard deviation, perform some calculations to
determine the range of scores on the dependent variable in which 95.44% of the scores fall.
Hint: remember that about 95% of the scores fall within 2 standard deviations above and
below the mean.
As instructed by the professor, use control variables, one of the control
variables is EDUCATION.
The mean of this variable is 13.24 years of schooling, and the
standard deviation is 1.77.
In the table, did the authors provide means and standard deviations for all of the study
variables? Is it appropriate to do so? Why not?
