• TigerAce@lemmy.dbzer0.comOP
    link
    fedilink
    arrow-up
    5
    ·
    1 day ago

    39.5 + 0.5

    =40, not 41

    55.5 + 0.5

    =56, not 57

    Its only possible if you round up 40.1 to 41, which is also bad math. When there are 3 variables properly rounded up, you can only have 3x0.5 added.

    • zloubida@sh.itjust.works
      link
      fedilink
      arrow-up
      5
      arrow-down
      1
      ·
      edit-2
      1 day ago

      What I say is that there is more than three variables. The three variables are already the result of addition of other variables rounded.

      • TigerAce@lemmy.dbzer0.comOP
        link
        fedilink
        arrow-up
        2
        ·
        1 day ago

        So there were other options you mean? Like 0.5% couldn’t read, 0.5% drew a picture of a gun instead of answering, etc?

        • idiomaddict@lemmy.world
          link
          fedilink
          arrow-up
          1
          ·
          1 day ago

          0.5% strongly approve, rounds up to 1%. 39.5% somewhat approve, rounds up to 40%. The proportion of people who, to varying degrees, approve is then listed as 41%, because otherwise people would see it as them saying 1+40=40.

          People are going to say they don’t understand math either way, so they just need to pick a convention and stick to it.

          • TigerAce@lemmy.dbzer0.comOP
            link
            fedilink
            arrow-up
            1
            ·
            1 day ago

            Ok, fair enough, yet again you can’t divide the group into smaller groups and by rounding up ending up with a larger group. Percent means per 100. It can never end up being more than 100, except for Trump who is going to reduce medicine prices 1200%. I mean, Americans use weird measurements already, their education system is already fucked and getting worse, I can understand they fail at primary school level math. But this is a British news paper.

    • starik@lemmy.zip
      link
      fedilink
      arrow-up
      1
      ·
      edit-2
      1 day ago

      39.5 = 40

      0.5 = 1

      40 + 1 = 41

      ———————-

      55.5 = 56

      0.5 = 1

      56 + 1 = 57

      ———————-

      3.5 = 4

      Since the original 5 numbers only add up to 95.5, you have a leftover 0.5 to distribute between them. After doing so, you would have what could have been the original results before rounding.

      • TigerAce@lemmy.dbzer0.comOP
        link
        fedilink
        arrow-up
        1
        ·
        edit-2
        23 hours ago

        Yet this is based on the assumption there were more options, plus the total should still not exceed 100%

        What they should have done was adding up all the combined answers first before rounding up or down, this would make the total 100.