Pankow Psych - "What is ANOVA... ...If value doubles, then 100% ↑" ???

Can someone please help explain what this sentence means? (from Pankow Anki)

"If value doubles, then 100% ↑"

Thank you

What is ANOVA? Similar to T-test, but for 3+ groups If value doubles, then 100% ↑

https://preview.redd.it/gfjzipvkis5d1.png?width=1672&format=png&auto=webp&s=7f143fe1528fae38d171f2ab9fc26e7bee0a1061