Instructions for STAT 250 Data Analysis Assignment 1
This assignment must be completed using the EconSurvey dataset provided on Canvas. You must not use AI to compute results or generate answers. All analysis must be done using the required statistical tools listed below.
Required tools:
StatKey (for one-way and two-way tables)
Rguroo (for bar charts and pie charts)
EconSurvey.csv file from Canvas
Investigation 1 Tasks
Identify the cases
Write one sentence stating who the cases are and how many cases there are (358 individuals).
Identify variables
State how many variables were collected.
Identify which variables are categorical and which are quantitative.
Study type
Identify whether the data came from an observational study or a randomized experiment, with one-sentence justification.
StatKey one-way table: EmploymentSector
Create a one-way table with counts and proportions
Screenshot only the Summary Statistics table
Paste the image into the solution document
List EmploymentSector values
Write one sentence listing all categories shown in the table.
StatKey one-way table: SavingsRate
Create a one-way table with counts and proportions
Screenshot only the Summary Statistics table
Paste the image into the solution document
Rguroo Pareto chart
Create a relative frequency Pareto bar chart for EmploymentSector
Bars must be ordered by decreasing proportion
Y-axis must show relative frequency
Properly title and label the graph
Paste the graph into the document
Rguroo pie chart
Create a pie chart for SavingsRate
Labels must show percentages
Slices ordered by decreasing value
Proper title required
Paste the graph into the document
Interpret EmploymentSector
Identify which sector has the highest and lowest proportion
Include the proportions in complete sentences
Interpret SavingsRate
Identify which savings level has the highest and lowest proportion
Include the proportions in complete sentences
Investigation 2 Tasks
StatKey two-way table
Create a two-way table of EmploymentSector SavingsRate
Screenshot both:
Counts table
Overall proportions table
Paste both images into the document
Column proportions
Generate the column proportions table
Screenshot and paste into the document
Column percentage calculation
Using the Counts table:
Calculate the percentage of high savers who work in the public sector
Show the calculation
Round proportion to 4 decimals before converting to a percentage
Write one sentence interpreting the result
Row proportions
Generate the row proportions table
Screenshot and paste into the document
Row percentage calculation
Calculate the percentage of public sector workers who save at a high level
Show calculation and interpretation
Grouped bar chart (EmploymentSector)
Create a side-by-side relative frequency bar chart
Factor 1: EmploymentSector
Factor 2: SavingsRate
Include legend, proper title
Paste into document
Grouped bar chart (SavingsRate)
Create a side-by-side relative frequency bar chart
Factor 1: SavingsRate
Factor 2: EmploymentSector
Include legend, proper title
Paste into document
Graph identification
State which graph represents row proportions and which represents column proportions in one sentence
Explanatory vs response variable
Identify explanatory and response variables in one sentence
Generalization
State whether results can be generalized to the population
Provide one-sentence justification
Causation
State whether causation can be established
Provide one-sentence justification
Formatting & Submission
All answers must be clearly labeled by question letter
All graphs and tables must be pasted directly from StatKey or Rguroo
Interpretations must match the numerical results
Follow STAT 250 conventions (concise, correct, no fluff)
Your solutions document should include the following items. Points will be deducted if the following are not included:
Type your Name and STAT 250 with your correct section number (e.g. STAT 250-xxx) right justified, at the top of the page.
Type Data Analysis Assignment #__, centered on the top of page 1 below your name to begin your solutions document.
Number your pages across your entire solutions document.
Your solutions document should include the ANSWERS ONLY, with each answer labeled by its corresponding number and subpart. Keep the answers in order.
Generate all requested graphs and tables using Rguroo or StatKey only.
A screenshot is a digital image that shows some or all of the contents of a computer display. A screenshot is created by the operating system or software running on the device powering the display. Screenshots are not pictures of your computer screen using your phone.
When asked for a screenshot, please only provide what is asked (not the entire screen). Lastly, make sure these screenshots are readable (the larger the better, but no bigger than half of a page).
Upload your solutions document as a pdf file. It is your responsibility to upload a readable file.
Constructivist perspectives share a number of common elements. They include complex learning environments and authentic tasks, involve social negotiation and multiple representations of content, and include student ownership of learning. Discuss ways each of these constructivist elements might be used for assignments in an undergraduate psychology class. Provide specific original examples of the applications and discuss why these represent application of constructivism.
Select the “Week 5 Discussion” link above. Then, in the week 5 discussion forum, select “Reply” to add your response to the discussion questions.
Attached Files (PDF/DOCX): Cohen – 1994 – The earth is round (p 05).pdf
Note: Content extraction from these files is restricted, please review them manually.
550 words, APA 7, Double spaced, Calibri 11, 5-6 references, scholarly peer-reviewed literature: ESSAY: COMPARING TWO OR MORE GROUPS ASSIGNMENT PROMPTS Provide an example of a hypothetical study that would use a one-way between-subjects ANOVA. Be sure to describe the different groups, conditions, and hypotheses involved. What would the null be and does successful rejection indicate a mean significantly different from every other mean? How would you decide on the necessary sample size (one which provides adequate statistical power)? State two common post hoc procedures for the comparison of means in an ANOVA. How do these differ from planned contrasts? Given a situation where a researcher intends to demonstrate that a treatment variable will have a significant difference on outcomes, which would the research want to be larger: MS between or MS within? Explain.
550 word, double spaced, APA 7, scholarly peer-reviewed literature, 5-6 references: ESSAY: COMPARING TWO INDEPENDENT GROUPS ASSIGNMENT PROMPTS There are several assumptions for the use of an independent samples t test. State each of these and the implications should these assumptions be violated. Is it possible for a p value to equal 0? Why or why not? There are several indices on effect sizes for independent samples t tests. Describe three of these and when one might be used over the others. Next, given a situation in which a research reports a large eta squared effect size (eta squared = .64), why might their reported t value be small and not statistically significant? What may be inference from such a situation? Indicate and provide examples of three of the factors that influence the size of t.
For your Initial Blog Post (Due Monday, February 9th by 11:59PM), you are required to produce the following: 1) Choose two variables from the list provided below (ideally, not one of the questions you had chosen in Module 1) to perform a complete numerical descriptive analysis and write-up. In this post, you need to include the following for each of the two questions: The question in full and why you selected these questions. An analysis of the descriptive statistics associated with the numerical variable, including summaries of the mean, standard deviation, and five-number summaries as demonstrated by the “Writing Tips” pdf and during lecture. Include the descriptive table summary at the end of your initial post. A summary of the information pulled from both the histogram-density plot as well as the boxplot. Include the graphs in your initial post. A critique about the measurement validity and measurement reliability if such exist (this part will help you review these concepts from Module 1!) Respond to ideas for future research: do you think that differences in these responses are related to something else? Do you think different groups could have different data patterns? Do you think differences in these values may impact various responses or beliefs? 2) Be sure that your initial blog post is between 500-700 words in accordance to the rubric (attached). This doesn’t count the summary tables. Be sure to follow the Rules of Writing for numeric data, found in the “Readings and Materials” Tab of Module 2 and can also be found here.Download and can also be found here. 3) Once you submit your own blog post, be sure to reply back to TWO of your fellow students, focusing on their GSS question and commenting on thoughts of Measurement Validity and Measurement Reliability. Aim for roughly 200 words or more for each response (see attached rubric), as you want to help your classmates engage in the brilliant social dialogue I know you all have within you!! The deadline for your two blog responses to Sunday, February 15th by 11:59PM. Best of luck!! The Numerical Variables will have the Ruler symbol in Jamovi. Some of those include: Mnemonic Description age Respondents age. agekdbrn Age of respondent when first kid was born. childs How many children one had. conrinc The yearly income of the respondent. educ Number of years of formal education. hompop Household size and composition. hrs1 Number of hours worked last week. hrs1 Number of hours worked last week. income Total Family income rank Respondent’s self ranking of social position (1-10) sei10 Respondent’s socioeconomic index (0-100) sibs Number of siblings of respondent
Watch the video about Gino Francesca and Dan Ariely presented in above in Canvas, then answer the questions below.
What exactly did Francesca and Ariely do that created the scandal?
Why was it so shocking that these two researchers in particular did this?
What was the ultimate outcome?
Be sure to post your opinions and respond to at least two other students by February 15. You do not have to provide peer-reviewed sources for your post, but if you do reference outside material, then you should cite it in APA 7 format.
I have several other videos on this case if anyone would like me to rip them into a file and post them. Or you can easily look it up for yourself. Judo has several videos on this particular topic.
Complete the following example problems and upload your answers and graphs to the link provided by the due date. **You may use online resources for creating any graphs/charts, but ALL resources must be cited for full credit. Any diagram must be cited by how it was created or 3 pts will be deducted from each graph shown. Example: Desmos. (2025). Desmos Graphing Calculator. Retrieved from . This is APA style used. You may choose MLA format to use as well. Desmos Graphing Calculator. Desmos, www.desmos.com/calculator. Accessed
For this Discussion, you will demonstrate your understanding of what would constitute sufficient evidence for the acceptance or rejection of the policy argument you are putting forth as expressed in your empirical statements, that is, statements of what you expect to find, to be tested on the basis of the hypotheses you have formulated. Credibility of project = valid definition + reliable measurement applied to a question that you have convincingly demonstrated as deserving an answer, so much so that those who do not share our worldview are compelled to agree with your quest. Be specific.
Attached Files (PDF/DOCX): Discussion Grading Rubric.pdf, Quantitative Case Study Assignment Instructions.docx, Previous Discussion Post that didnt get graded well.docx, Discussion Assignment Instructions.docx, professors reply to the last discussion.docx, Discussion Thread prompt.docx
Note: Content extraction from these files is restricted, please review them manually.