Em-Dash
Whether the title contains an em-dash (—). Em-dashes typically split a setup from a punchline or quote attribution.
Em-dashes signal a more literary or editorial style and are commonly used to attach a quote or punchline to a setup. The structure mirrors the setup-payoff pattern that drives click-through. Distinct from hyphen-as-separator (which has its own binary) — the visual is heavier and reads more deliberately.
Average Video is the effect on a typical video. Top 10% Video is the effect on the videos that broke out (top decile of views) — so you can see whether a factor helps most videos a little, or pushes the top performers much higher.
When present
The title uses an em-dash to set off a quote, punchline, or aside.
Videos with this factor
When absent
The title uses other punctuation or none.