Internet Exercises 1. Find the two articles attached by M. L. McHugh. In the first article(Part 1 Article), examine Figure 2 and its associated narrative. Briefly explain why the variable in that figure is at the ordinal level and not the interval level. 

In the second article (Part 2 Article), briefly summarize what it says about the advantages and disadvantages of the mean, the influence of extreme scores, and the uses of the median and the mode. 

Articles Below are attached 

M. L. McHugh. (2003). Descriptive statistics, Part I: Level of measurement. (Scientific Inquiry). Journal for Specialists in Pediatric Nursing, 8(1), 35–37. 

M. L. McHugh. (2003). Descriptive statistics, part II: Most commonly used descriptive statistics. (Scientific Inquiry). Journal for Specialists in Pediatric Nursing, 8(3), 111–116. 

The Two articles are attached to complete the 

 

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COM180-M4-A2-Reflection2

1-Plan to have a thoughtful conversation with a friend, family member, or colleague. Before you have the conversation, note the following things that you will be required to do during your conversation:

2-After having the thoughtful conversation with another individual, please write a one- to two-page reflection paper focused on the following questions:

 

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Interpret the following computer cross-tab output including a X2  test. Interpret the computer cross-tab output, including a Chi-square test. Variable COMMUTE is “How did you get to work last week?” Variable GENDER is “Are you male or female?” Comment on the appropriateness of the statistical test used (make sure that your response includes information on the types of variables used and the scales of measurement). Describe an alternative approach that may be used. 

——————–COMMUTE*GENDER Cross-Tabulation——————————-GENDER————–Female——Male——–TotalCOMMUTE At Home Count    6         10         16%within COMMUTE            37.5%  62.5% 100.0%%within GENDER                   7.0%  17.9%    11.3%% of Total                                4.2%    7.0%    11.3%—————————————————————————————————–BUS Count                     16         16           32%within COMMUTE   50.0%  50.0% 100.0%%within GENDER        18.6%  28.6%   22.5%% of Total                     11.3%  11.3%   22.5%——————————————————————————————————DRIVE Count                  32     17            49%within COMMUTE 65.3%  34.7%  100.0%%within GENDER     37.2%  30.4%    34.5%% of Total                  22.5% 12.0%     34.5%——————————————————————————————————PASSENGER Count       24           9         33%within COMMUTE  77.7%  27.3%  100.0%%within GENDER      27.9%  16.1%    23.2%% of Total                  16.9%     6.3%    23.3%——————————————————————————————————WALK Count                    8        4            12%within COMMUTE   66.7%  33.3% 100.0%%within GENDER         9.3%    7.1%     8.5%% of Total                      5.6%    2.8%     8.5%——————————————————————————————————Total Count                      86         56        142%within COMMUTE   60.6%    39.4%  100.0%%within GENDER          9.3% 100.0%   100.0%% of Total                     60.6%   39.4%   100.0%

Interpret the computer cross-tab output, including a Chi-square test.Variable COMMUTE is “How did you get to work last week?”Variable GENDER is “Are you male or female?”Comment on the…

 

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Interpret the survival curves given below

estimate the median survival time in the two groups being compared. In your opinion, does the median survival time differ substantially between the 2 groups? Why or why not?

1 resected PM

median survival time = _________________

> 1 resected PM

median survival time = _________________

Comparison of median survival times

No questions below line information only

_____________________________________________________________________________________________________________________________________

CASE INFO- INFORMATIONAL ONLY:

A study was conducted to identify prognostic factors of improved survival after resection of isolated pulmonary metastases (PM) from colorectal cancer. Data were collected for 77 patients who underwent a complete resection during the first thoracic operation. The variables in the data set are given below

VARIABLES:

subj:                           Subject number

number:                    Number of resected pulmonary metastases (nominal variable)

                                   categorized as “>1” or “1”

months:                     Survival in Months

status_2:                    Vital status at end of study

 

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Interpretation of Reactions by Ionic Type Equations. Aqueous solutions of the following substances or their mixtures with water if they are only slightly soluble, are mixed. Write first the conventional equation, second the total ionic equation, and lastly the net ionic equation. If you predict no appreciable reaction, indicate this, and state why.

a. Magnesium chloride and sodium carbonate

b. Aqueous ammonia and hydrofluoric acid

c. Nitric acid and magnesium acetate

d. Ammonium chloride and sodium hydroxide

e. Barium chloride and calcium nitrate

f. Potassium hydrogen carbonate and sulfuric acid

g. Aluminum hydroxide and nitric acid

h. Aqueous ammonia and sulfuric acid

i. Magnesium nitrate and zinc chloride

 

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