ELI5: Explain Like I'm 5

Singular value

Singular value is like a measure of how important something is. Think of it like a check mark you would get on a report card for how well you did. Each thing you do can get a check mark based on how important that particular thing is. A singular value is like the check mark for a single thing. It might be a number (like 1, 2, 3...) or it might be a word (like great or outstanding).