AI explanation

^{Show image generation prompt} Model: dalle-3
Prompt: [ Data cyber art ] Generate an image where a graph on the left shows a steady increase in annual US household spending on fruits and vegetables. On the right, another graph depicts a decrease in McDonald's stock price (MCD). In the background, a McDonald's restaurant is seen undergoing renovations to offer healthier options. People are shown walking past, carrying bags of fresh produce and smiling as they make healthier food choices. The scene should be vibrant and futuristic, with a focus on the juxtaposition of healthier eating habits and business trends. 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 variables described. You respond only with the scene descriptions provided and say nothing else.
User prompt: Here are two variables: Annual US household spending on fruits and vegetables and McDonald's stock price (MCD). Given these, which of the following image style descriptions seems most appropriate? Pick the one that seems to be related to one of the variables at hand. Please respond with only one of the following potential descriptions: Cubism Woodblock painting Data cyber art A scene from Skyrim Minimalism
ChatGPT: Data cyber art

Model: gpt-3.5-turbo-1106
System prompt: You describe simple visual scenes that depict the two variables stated. You combine both variables into one scene.
User prompt: Please describe a visual scene that prominently depicts both Annual US household spending on fruits and vegetables and McDonald's stock price (MCD), in the following situation: As households spent more on fruits and vegetables, they started to feel healthier and more conscious of their food choices. This led to a decrease in fast food consumption, making people less likely to visit McDonald's. With fewer customers, McDonald's had to innovate and improve their menu by offering healthier options and revamping their marketing. This ultimately boosted their sales and investor confidence, causing an increase in McDonald's stock price. Who would've thought that kale and a rising stock price could be related?. Keep the description simple.
ChatGPT: In the scene, a graph shows a steady increase in annual US household spending on fruits and vegetables. Next to it, another graph depicts a decrease in McDonald's stock price (MCD). Meanwhile, in the background, a McDonald's restaurant is seen undergoing renovations to offer healthier options as people are shown walking past, carrying bags of fresh produce and smiling as they make healthier food choices.

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: [ Data cyber art ] and depicting this scene: In the scene, a graph shows a steady increase in annual US household spending on fruits and vegetables. Next to it, another graph depicts a decrease in McDonald's stock price (MCD). Meanwhile, in the background, a McDonald's restaurant is seen undergoing renovations to offer healthier options as people are shown walking past, carrying bags of fresh produce and smiling as they make healthier food choices. Keep the visual depiction simple. Do not include any words or speech bubbles.
ChatGPT: [ Data cyber art ] Generate an image where a graph on the left shows a steady increase in annual US household spending on fruits and vegetables. On the right, another graph depicts a decrease in McDonald's stock price (MCD). In the background, a McDonald's restaurant is seen undergoing renovations to offer healthier options. People are shown walking past, carrying bags of fresh produce and smiling as they make healthier food choices. The scene should be vibrant and futuristic, with a focus on the juxtaposition of healthier eating habits and business trends.

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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

Peeling Back the Layers: A Fruitful Study of the Relationship Between US Household Spending on Fruits and Vegetables and McDonald's Stock Price Journal of Gastronomical Economics Jan 2024

Problem variable:	Which variable has a problem? Annual US household spending on fruits and vegetables McDonald's stock price (MCD) 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. Y-axis doesn't start at zero: I truncated the Y-axes of the graph above. I also used a line graph, which makes the visual connection stand out more than it deserves. ^Note Nothing against line graphs. They are great at telling a story when you have linear data! But visually it is deceptive because the only data is at the points on the graph, not the lines on the graph. In between each point, the data could have been doing anything. Like going for a random walk by itself!
   Mathematically what I showed is true, but it is intentionally misleading. Below is the same chart but with both Y-axes starting at zero.

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([552,535,561,552,592,600,657,656,679,715,731,751,756,769,783,837,858,876,977,1033,1099,])
array_2 = np.array([26.47,16.17,24.95,31.6,34.29,43.65,59.48,62.38,62.63,77.1,101.33,89.4,96.81,94.13,117.25,121.86,173.73,175.41,198,214.49,269.49,])
array_1_name = "Annual US household spending on fruits and vegetables"
array_2_name = "McDonald's stock price (MCD)"

# 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 Annual US household spending on fruits and vegetables
• Line chart for only McDonald's stock price (MCD)
• AI-generated correlation image
• The spurious research paper: Peeling Back the Layers: A Fruitful Study of the Relationship Between US Household Spending on Fruits and Vegetables and McDonald's Stock Price