Category: Statistics

Read Chapter 1 of Siegel’s textbook Download Chapter 1 of Siegel’s textbookand reflect on the role of statistics.  How important is it for your career goals ?  Review the questions and problems in the end-of-chapter section and share some insights about one of the questions or problems of your choice.
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Background
This applet is based on a scenario from a popular game show from the 1960s. Contestants are asked to choose one of three doors. Behind one is a fabulous prize! Behind the others are gag gifts. When a contestant chooses a door, the game show host shows the contestant a gag gift behind one of the two doors that were not chosen. The contestant is then given the option of switching to the one remaining door that has not been opened or staying with their original choice. 
This applet allows users to play the game repeatedly to determine what is the best strategy for winning the prize. Doors are chosen by clicking on the numbers one through three. The user starts a game by selecting a door. The door the user selects will be outlined. One door with a gag gift (represented by a donkey) is then revealed. The user has the choice to either stay with their original door by clicking on it again, or to switch to the remaining closed door by clicking on it. After the user has made their decision, the location of the prize is revealed. A new game can be started by clicking on any door. 
The table at the bottom of the game area keeps track of the total wins and losses with each strategy. The raw results from the games from this applet can be added to the StatCrunch data table by clicking the Analyze button. 
Instructions
https://login.pearson.com/v1/piapi/piui/signin?client_id=dN4bOBG0sGO9c9HADrifwQeqma5vjREy&okurl=https:%2F%2Fmycourses.pearson.com%2Fcourse-home&siteid=8313
Pearson login : jasmineortiz9611 
PW: Madison2024.
Part I:
Conduct this activity in MyLab by Pearson
Opening and playing the game:  
Click on the “MTH 210 StatCrunch” tab
Click on “Open Link”
Go to the second arrow: Click on Visit the StatCrunch Website
Click on the Orange > Open StatCrunch
Click on Applets > Games > Let’s Make a Deal
A new window will pop up with 3 different doors to choose from.  Click on one of the numbers to start the game.  One door with a gag gift (represented by a donkey) is then revealed. You can now either choose to stay with your original door by clicking on it again, or to switch to the remaining closed door by clicking on it. After you have made your decision, the location of the prize is revealed. A new game can be started by clicking on any door (do not press reset unless you want to start over again- all your data will be removed). 
Data simulation and comparison : 
Stay with your original door choice 5 times and then choose another door 5 times.  Which strategy was more effective in this small sample size? Is there a significant difference in the results based on what you simulated? 
Continue to play the game as many times as you want to get a large sample size (50 times playing the game is recommended). 
Click on Analyze and your data will be placed into two columns “Result” and “Strategy”. 
Generate a table and graph your results: 
Click on Stat > Tables > Frequency 
Select Column “Strategy” and Group by “Result” and select for Statistic (s) “Percent of Total”, then hit Compute!  
A table will be generated.  Copy and paste into to a word document. 
Next, click on Graph > Bar Plot > With Data 
Select Column “Strategy” and Group by “Result”, and select for Type “Percent”, then hit “Compute!” 
A graph will be generated.  Copy and paste into a word document. 
Part II:
Answer the following questions in the submission box 
Analysis: 
From your table and your graph, what conclusions can you draw when comparing the strategies for switching versus staying?  Is there clearly a better strategy when playing this game? 
What would be an important next step as a statistician to ensure your conclusions about the best game strategy is correct?  How do we know that with this simulation, it wasn’t just by chance to get such a big difference between switching versus staying? 

Journal activity: Real-World Applications of
QM Project
I have created a journal activity that consists in Choosing a topic of interest and writing a short paragraph (no more than 10 lines) to showcase how
Quantitative methods are used in various fields.

here is often a requirement to evaluate descriptive statistics for data within an organization or for health care information. Every year, the National Cancer Institute collects and publishes data based on patient demographics. Understanding differences between the groups based upon the collected data often informs health care professionals about research, treatment options, or patient education.
Using the data on the “National Cancer Institute Data” Excel spreadsheet, calculate the descriptive statistics indicated below for each of the race/ethnicity groups. Refer to your textbook and the topic Resources, as needed, for assistance with creating Excel formulas.
Provide the following descriptive statistics:
Measures of central tendency: mean, median, and mode.
Measures of variation: variance, standard deviation, and range (a formula is not needed for range).
Once the data are calculated, provide a 150-250-word analysis of the descriptive statistics on the spreadsheet. This should include differences and health outcomes between groups.

Read the instructions. it’s a one page paragraph and u have to add one or two graph . also read the grading timeline . it’s an easy assignment

please make a report for the survey in the attached link and explain each readings
https://vrwozd2v2od.typeform.com/report/atyE5nFr/dXPvWEh5gpzp4VJJ

I need to do a report and I need to write the methods and results on the hypothesis tests for the full set and the 7 waves, I am uploading the power point presentation, the excel data and draft of our reseaqrch paper.

This is STAT 101 PLS SEND IT AS A MICROSOFT WORD .
Visit one of the polling sites listed and choose one poll to analyze
1- Go to one of these sites: Quinnipiac PollLinks to an external site., Marist PollLinks to an external site., 538Links to an external site. (political polling), Washington Post Poll,Links to an external site. Fox News PollLinks to an external site.. (Note: the first two, Quinnipiac and Marist, are academically based well respected polling centers. The last two are journalistic and are known to have a particular point of view (bias)Links to an external site., the Washington Post leans ‘left’ and Fox New is decidedly ‘right’, politically speaking.
Spend a little time clicking on the different topics and polls – those that you find interesting – look at the dates, questions, answers and answer patterns (%s) and other information (N, Margin of error!)…
2- After you have looked at many questions, choose one poll and one question (& its answers) to use for this discussion.
Ensure that it is a poll that is recent – not old!
You’ll need the percent for one of the responses to the question and the N. Look for the N in the ‘fine print’ – if you chose a legitimate poll, it should have the N and their margin of error calculation available near the poll findings.
3- Then, for the question you chose, post the following – using the question topic as your post subject
1- the link to the web page where you got the data so we can go look at it
2-your own calculation of the margin of error (for one of the answer categories) and whether or not your margin of error matches the one they stated, and
3- a brief interpretation of the results – use the sentence structure we use in our class work.
I uploaded an example for this question. please do it correctly and as the example provided!!!!! Thanks
here are the links .
https://poll.qu.edu/.
https://maristpoll.marist.edu/latest-polls/.
https://projects.fivethirtyeight.com/polls/
https://www.washingtonpost.com/politics/polling/
https://www.foxnews.com/official-polls
https://www.allsides.com/media-bias/media-bias-chart.

___________________________________________________________________
Quantitative Methods (STAT-201)
Assignment 3: Excel QM (Social-Responsible)
2nd Semester, 1444-1445 (2023-2024)
Due date: 06 May 2024 (Time: 11:00 PM)
Student’s Name
Student’s ID
Section/CRN
Location
Marking Scheme
Question
Score
Obtained Score
Q-1
2
Q-2
2
Q-3
2
Q-4
2
Note: You are required to fill your full name, ID, and CRN.
Message: Social responsibility is a framework of ethics in which an individual collaborates and works with other organizations and individuals for the betterment of the community. There are numerous ways in which an organization can exhibit social responsibility; for instance, by promoting volunteerism, facilitating donations, employing ethical employment practices, and implementing environmental improvements. It introduces the subjective obligation that entails maintaining a delicate equilibrium between one’s ecosystem and the economy, as well as the potential compromises that may be made between economic progress and societal and environmental wellbeing. This transcends business organizations and affects all individuals whose actions influence the environment.
Solve the following questions using Excel QM. (2×4 = 8 marks)
Helping others through blood donation is a form of social solidarity or social responsibility. The blood donors cite a sense of social responsibility as their reason for donating blood, and as a result, the communities value and reward this activity. The following table shows the number of blood donors in a university from 2011–2023. Develop a 3-year moving average forecast and obtain the related statistical measures using excel QM.
University X has a unique on-campus dispensary that provides medical care. On a typical working day, patients arrive at the dispensary at an average rate of 2 patients per hour. There is one single nurse at the dispensary, and the average time required to give a consultation is 12 minutes.
Assume that you are a statistical consultant and want to provide a volunteer consultation to a start-up company as a social responsibility consultation. The company is planning to purchase a uniform outfit for their employees, and they obtained the following quantity discount table with three discount options:
To help needy people through charity is a form of social responsibility. The act of doing charity to help others is recognized and rewarded by all communities of the society. The following table shows the amount collected through charity and the amount spent on social development (in million dollars) in the last 8 years. Find the correlation and coefficient of determination for the given data and obtain the related statistical measures using excel QM.
year
Blood Donors
2011
116
2012
105
2013
146
2014
159
2015
108
2016
194
2017
227
2018
219
2019
234
2020
224
2021
248
2022
253
2023
265
2024
311
Solution:
It is assumed that the service times can be described by the exponential distribution, and the arrival process by a Poisson distribution. You are requested to find:
The average time in line,
The average number of patients in line,
The average time in the system,
The average number of patients in the system,
The probability that the dispensary is empty,
The utilization factor of the system.
Solution:
DISCOUNT NUMBER
DISCOUNT QUANTITY
DISCOUNT COST (SAR)
1
0 to 49
100
2
50 to 99
90
3
100 and over
85
Annual demand is 400 outfits, ordering cost is 50, and holding cost is 25% of the cost of the outfit. Use Excel QM to find the discount option with the minimum total cost.
Solution:
Year
Amount collected(y)
Amount spent(x)
1
18
15
2
14
10
3
12
9
4
15
12
5
10
5
6
8
4
7
9
6
8
6
3
Solution:

Introduction: In these instructions, we will use the example above (“Favorite Ice Cream Flavors and Gender Preferences”) as an example of a project to perform for this class. Please choose a different question to ask for your project, and use this as a guide for what your project will look like. Be sure that whatever question you ask, it represents a comparison of two different categories. For example, the question “Is there a predictive relationship between car type and gender?” would relate categories of car types (sedan, SUV, pickup trucks, hatchback, etc.) to gender (M, F, etc.).
Another example would be, “Does someone’s preferred media type change depending on generation?” This would relate media types like television, books, online text, online video, social media feeds, etc., to someone’s generation (Baby Boomer, Gen X, Millenial, Gen Z, etc.).
In the Ice Cream and Gender Preferences sample project below (your project must be different, but you can use this project as a model), we will investigate whether there is a significant association between people’s favorite ice cream flavors and their gender.
We will use the chi-square test for independence to analyze the data you collect and draw conclusions based on your findings. This project will help you understand how to perform and use hypothesis testing in the real world.
Materials Needed:
Data collection sheet (you can use any format that works for you).
Pens/pencils for data collection.
Computer or calculator.
Data Collection:
Formulate a plan to collect data from a sample of individuals. You can approach friends, family members, classmates, or any group of people willing to participate in your survey. (Note: this is a convenience sample, which does not generally yield valid results. You may put in more effort toward creating a better sample design, but please be mindful of the time we have left in the class.)
Create a data collection sheet with two columns: one for favorite ice cream flavors and one for gender. Include at least five different ice cream flavors and categories for male, female, and non-binary genders (if you choose).
Aim to gather data from at least 25 participants to ensure an adequate sample size for the chi-square test.
Data Entry:
Use your data collection sheet to organize your data into a contingency table with rows for each ice cream flavor and columns for male and female respondents.
Count the number of individuals who prefer each ice cream flavor for each gender and fill in the corresponding cells in the contingency table.
Submit a photo of this sheet for credit. Be sure to hold on to this sheet, since you will use it in future assignments.