How to format ranges including negative values in tables? I am working on a research paper where I am trying to format values in a table:
From −0.2 to −0.14. Is this formatting correct?

-0.2 - -0.14


Another question:
From −3 to 3. Is this correct?

-3-3
Personally, I would definitely not use this type of formatting, as I think it is easy for people to confuse the various different types of dashes.  Instead, I would recommend using the bracket format typically used for denoting intervals. Formatted in this manner, your examples would be:

[-0.2, -0.14]
[-3, 3]