Single oder was
Im gegenteil single oder was
in modern non-scientific use, however , despite the complaints of traditionalists, it is often not treated as a plural.
Single oder Mingle? - Liebe lieber unverbindlich - FOCUS Online as soon as you have more than a moderate amount of information to convey, a multiple page design is likely to create a better user experience.
Single-Page vs. Multi-page UI Design: Pros & Cons
sentences such as data was (as well as data were ) collected over a number of years are now widely accepted in standard english.