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AI explanation

^{Show image generation prompt} Model: dalle-3
Prompt: Generate an image of a 3D Pixar-style shoe store during the holiday season. The store should be filled with customers waiting to try on and purchase new shoes. Display windows should showcase festive footwear, catching the attention of passersby. Inside, the shelves should be stocked with various shoe styles and sizes, and the atmosphere should be filled with the buzz of excitement as customers browse. A large banner outside the store should read "Holiday Shoe Sale - Everything Must Go!" and the price tags on the shoes should be visibly labeled with increasing numbers, reflecting the rising Christmas Price Index. The depiction should include only scenes, people, and objects, it should not include text or speech bubbles.

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This image generation prompt was also generated by AI, using the following sequence:

Model: gpt-3.5-turbo-1106
System prompt: You select one of a few potential scene descriptors that seems to go along with the situation described. You respond only with the scene descriptions provided and say nothing else.
User prompt: Here is a situation: Rising Christmas Price Index Forces Americans to Walk on Eggshells, Leading to Surge in Shoe Store Sales. Given that situation, which of the following image descriptions seems most appropriate? Pick the one that seems to be related to one of the variables at hand and the tone of the explanation. Please respond with only one of the following potential descriptions: 3D Pixar Style Oragami Cubism Photorealism Brutalism
ChatGPT: 3D Pixar Style

Model: gpt-3.5-turbo-1106
System prompt: You describe simple visual scenes that depict the two variables stated and the explanation described. Do not reference graphs or charts; describe physical objects.
User prompt: Please describe a visual scene that depicts the following situation. Keep the description simple. Rising Christmas Price Index Forces Americans to Walk on Eggshells, Leading to Surge in Shoe Store Sales
ChatGPT: Imagine a bustling shoe store with a long line of customers waiting to try on and buy new shoes. The shelves are filled with various styles and sizes, and the air is filled with the hum of excitement as people browse and chat about their choices. Outside the store, a large banner reads "Holiday Shoe Sale - Everything Must Go!" as people walk by, glancing at the display windows filled with festive footwear. Meanwhile, the price tags on the shoes are carefully labeled with increasing numbers, indicative of the rising Christmas Price Index.

Model: gpt-3.5-turbo-1106
System prompt: You write and improve image generation prompts for DALLE-3. You maintain the same subjects, but enhance the visuals.
User prompt: Please respond with an image generation prompt that would be likely to create an interesting visual using DALLE-3, using the following style: [ 3D Pixar Style ] and depicting this scene: Imagine a bustling shoe store with a long line of customers waiting to try on and buy new shoes. The shelves are filled with various styles and sizes, and the air is filled with the hum of excitement as people browse and chat about their choices. Outside the store, a large banner reads "Holiday Shoe Sale - Everything Must Go!" as people walk by, glancing at the display windows filled with festive footwear. Meanwhile, the price tags on the shoes are carefully labeled with increasing numbers, indicative of the rising Christmas Price Index. Keep the visual depiction simple. Do not include any words or speech bubbles.
ChatGPT: Generate an image of a 3D Pixar-style shoe store during the holiday season. The store should be filled with customers waiting to try on and purchase new shoes. Display windows should showcase festive footwear, catching the attention of passersby. Inside, the shelves should be stocked with various shoe styles and sizes, and the atmosphere should be filled with the buzz of excitement as customers browse. A large banner outside the store should read "Holiday Shoe Sale - Everything Must Go!" and the price tags on the shoes should be visibly labeled with increasing numbers, reflecting the rising Christmas Price Index.

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*Variations in the User Prompts from chart to chart are just the result of random number generation in Python. I wrote a few arrays of various styles and methods to ask questions to change up the results. Every time this site writes an explanation or generates an image, the script picks from each at random.

I sequence the requests into multiple prompts because I find GPT 3.5 to perform much better with short, well-managed contexts. Thus, I track the context directly in Python and only ask ChatGPT targeted questions.

AI academic paper

The Soleful Yuletide: A Statistical Analysis of the Christmas Price Index and US Shoe Store Sales The Journal of Festive Footwear Economics Jan 2024 Reminder: This paper is AI-generated. Not real!

Problem variable:	Which variable has a problem? Christmas Price Index in the United States US Shoe Store Sales Neither / both
Issue:	What is the issue? The data is incorrect The chart isn't displaying properly There is a typo The source link is incorrect A calculation is wrong Something else
Additional details: Optional
Confirm you are a human:

Data details

Why this works

1. Data dredging: I have 25,153 variables in my database. I compare all these variables against each other to find ones that randomly match up. That's 632,673,409 correlation calculations! This is called “data dredging.” Instead of starting with a hypothesis and testing it, I instead abused the data to see what correlations shake out. It’s a dangerous way to go about analysis, because any sufficiently large dataset will yield strong correlations completely at random.
2. Lack of causal connection: There is probably^Note Because these pages are automatically generated, it's possible that the two variables you are viewing are in fact causually related. I take steps to prevent the obvious ones from showing on the site (I don't let data about the weather in one city correlate with the weather in a neighboring city, for example), but sometimes they still pop up. If they are related, cool! You found a loophole.
   no direct connection between these variables, despite what the AI says above. This is exacerbated by the fact that I used "Years" as the base variable. Lots of things happen in a year that are not related to each other! Most studies would use something like "one person" in stead of "one year" to be the "thing" studied.
3. Observations not independent: For many variables, sequential years are not independent of each other. If a population of people is continuously doing something every day, there is no reason to think they would suddenly change how they are doing that thing on January 1. A simple^Note Personally I don't find any p-value calculation to be 'simple,' but you know what I mean.
   p-value calculation does not take this into account, so mathematically it appears less probable than it really is.
4. Outlandish outliers: There are "outliers" in this data.^Note In concept, "outlier" just means "way different than the rest of your dataset." When calculating a correlation like this, they are particularly impactful because a single outlier can substantially increase your correlation.
   
   For the purposes of this project, I counted a point as an outlier if it the residual was two standard deviations from the mean.
   
   (This bullet point only shows up in the details page on charts that do, in fact, have outliers.)
   They stand out on the scatterplot above: notice the dots that are far away from any other dots. I intentionally mishandeled outliers, which makes the correlation look extra strong.

Try it yourself

# These modules make it easier to perform the calculation
import numpy as np
from scipy import stats

# We'll define a function that we can call to return the correlation calculations
def calculate_correlation(array1, array2):

    # Calculate Pearson correlation coefficient and p-value
    correlation, p_value = stats.pearsonr(array1, array2)

    # Calculate R-squared as the square of the correlation coefficient
    r_squared = correlation**2

    return correlation, r_squared, p_value

# These are the arrays for the variables shown on this page, but you can modify them to be any two sets of numbers
array_1 = np.array([15582,15760.7,15944.2,12481.7,13195.9,13343.9,14214.9,14940.2,15210.2,15748.8,14558,16885.3,17296.9,18348.9,18920.6,19507.2,21080.1,21465.6,23439.4,24263.2,25431.2,27393.2,27673.2,34131,34363.5,34558.6,38926,38993.6,16168.1,41205.6,])
array_2 = np.array([18620000000000,19030000000000,19910000000000,20340000000000,21240000000000,21450000000000,22240000000000,22690000000000,22880000000000,22880000000000,23200000000000,23170000000000,23690000000000,25260000000000,26680000000000,26810000000000,26690000000000,25070000000000,26370000000000,28070000000000,29510000000000,29880000000000,33960000000000,35310000000000,36920000000000,36330000000000,37200000000000,37630000000000,29640000000000,39150000000000,])
array_1_name = "Christmas Price Index in the United States"
array_2_name = "US Shoe Store Sales"

# Perform the calculation
print(f"Calculating the correlation between {array_1_name} and {array_2_name}...")
correlation, r_squared, p_value = calculate_correlation(array_1, array_2)

# Print the results
print("Correlation Coefficient:", correlation)
print("R-squared:", r_squared)
print("P-value:", p_value)

Reuseable content

• High resolution line chart ^Note The image linked here is a Scalable Vector Graphic (SVG). It is the highest resolution that is possible to achieve. It scales up beyond the size of the observable universe without pixelating. You do not need to email me asking if I have a higher resolution image. I do not. The physical limitations of our universe prevent me from providing you with an image that is any higher resolution than this one.
  
  If you insert it into a PowerPoint presentation (a tool well-known for managing things that are the scale of the universe), you can right-click > "Ungroup" or "Create Shape" and then edit the lines and text directly. You can also change the colors this way.
  
  Alternatively you can use a tool like Inkscape.
  
• High resolution line chart, optimized for mobile
• Alternative high resolution line chart
• Scatterplot
• Portable line chart (png)
• Portable line chart (png), optimized for mobile
• Line chart for only Christmas Price Index in the United States
• Line chart for only US Shoe Store Sales
• The spurious research paper: The Soleful Yuletide: A Statistical Analysis of the Christmas Price Index and US Shoe Store Sales