POST MAT220 ALL UNITS DISCUSSIONS

unit 1Graphical displays are used to provide the viewer information that
illustrates qualitative or quantitative information about the data set
under review. After reading the assigned sections in Chapter 2, please
provide an example of where you think a graphical display could be used
incorrectly. What ramification(s) do you think could result from the
graphical display in your example being used incorrectly?unit 2What measures of central tendency, dispersion, or position discussed in
Unit 2 have you been reading about or listening to in the news today?
For example, lately there have been numerous news reports on the mean
price of gas or the median price of homes in a particular state, etc.
Is the measure you discuss in your post being used correctly? Why or
why not?What additional questions would you want to ask the
author of the news article/story you are discussing to determine if the
data they are reporting on is being reported correctly?UNIT 3What method of assigning probability (relative frequency, classical, or
subjective) discussed in Unit 3 do you feel is the most appropriate to
use and why? In your response, please provide an example that is not
found in your text.UNIT 4After reading the example of where probability values can be used in
managerial decision-making to establish a product guarantee, post a
comment where you think probability could be used to help solve
management questions/problems. Think of something at work, past or
present, where you could apply the techniques in the example to assist
in making the best decision. If you can’t draw on a life experience,
then think of a product/issue where this process could be applied.
Please explain your answer.UNIT 5Why are sampling distributions important to the study of inferential
statistics? In your answer, demonstrate your understanding by providing
an example of a sampling distribution from an area such as business,
sports, medicine, social science, or another area with which you are
familiar.UNIT 6What are the advantages and disadvantages of using confidence intervals as an alternative approach to statistical inference?UNIT 7Hypothesis testing has come under scrutiny and a sense of skepticism
over the past few years by experts in all fields where hypothesis
testing is utilized. Based on what you have covered in the course
through Unit 7, discuss the pros and cons of hypothesis testing from
your viewpoint. Why do you think hypothesis testing can lead to
skepticism in general?UNIT 8AQuestion 8 APick
any two variables that you feel may be related and estimate what you
think the strength of the correlation coefficient would be for those two
variables. In your response, estimate the value of r. For example,
specify a strong (.7 to .9), medium (.4 to .6), or low (0 to .3) value
for r. The value of the coefficient can be positive or negative. For
example, consider an increase in police patrols in a neighborhood and
the number of burglaries that occur in that neighborhood. I would say
that would be a strong inverse relationship with an r value of -0.8; as
one (patrols) increases, the other (burglary rate) goes down. Describe
the factors that you think would contribute to why the variables would
have the relationship that you estimate it to be.UNIT 8BQuestion 8 BNow
that you have completed this course in Statistics, please describe a
concept covered in the course that you feel might be of assistance to
you now or in the future. For example, using charts and graphs to
graphically describe data at your job, or using one of the sampling
methods discussed at the beginning of the course to generate sample
data. Please be specific in explaining how you would use what you have
learned in class to your benefit.