And Hawaii and Pompeii. Roman numerals do make up a lot of the ii's. Roughly, about 75% of them. A lot of the xx's too.

Yes.

The bar chart counts the occurrences of double letters in all of English Wikipedia's article text.

Data Source: English Wikipedia's April 1st, 2022 article data dump

Tools: Python, Matplotlib

I've just verified that this is due to the letters "a" through "z" along with the numerals "0" through "9."

Yes.

The word count goes by spelling only, and it is case insensitive. The numerals I'm referring to are Arabic numerals.

I'm pretty sure these are numerals. It makes sense since both add up to 36.

No. I'm pretty sure the ghost words are numerals. I should have wrote "characters" rather than "letters."

It might take me a little while to do all of them. The 20-letter 8-syllable words are "institutionalization" and "counterrevolutionary."

They are the abbreviation Rep, and the acronyms BMW, DFW. If I'm not mistaken, DFW stands for Dallas Fort-Worth. The dataset, though, lists the pronunciation as "dee-eff-dub-eh-you."

Data Sources: For syllable counting, the CMU Pronunciation Dictionary was used along with a few supplementary data points. Most common word data was obtained by analyzing Wikipedia database dumps.

Tools: Python Matplotlib

There's a Japanese singer with a very similar stage name. I'm guessing that has something to do with it.

Sources:

https://data.transportation.gov/Roadways-and-Bridges/Licensed-Drivers-by-state-gender-and-age-group/xfkb-3bxx

https://en.wikipedia.org/wiki/List_of_U.S._states_and_territories_by_population

Tools: Python Plotly

Spinners: Think rotating monkey bars. In practice, the designs can vary quite a bit.

Whirls: Things like marry-go-rounds.

Stepping pods: The idea is similar to that of a balance beam, however, their design better resembles lily pads without the water.

These are actually multi-swing setups. Most have 2 or 3 swings, but around 18% of them have 1, 4, or 5.

Whirls and spinners are both rotating toys. Whirls tend to be lower to the ground like a marry-go-round. Spinners are higher, and using them tends to involve greater use of the hands.

Source:

City of Pittsburgh Playground Equipment

The dataset is released by the City of Pittsburgh and it's licensed under CC-BY.

Tools: Python Matplotlib