Data is plural, datum is the singular. Therefore, 'is available' should be 'are available', and that also makes 'itself' wrong....but themself or themselves sounds wierd. Probably in english we wouldn't say itself or themself at all in this case.
It is also more commonly used as a singular mass noun. http://dictionary.reference.com/browse/data+?s=t
Weird spelling of weird!
Yeah, I know it's commonly used this way, so I have no problem with Duolingo accepting it used that way, I just think the 'correct' way should also be accepted!!
I always have problems with weird...
I agree; and there are subcultures, e.g., statisticians, where data are still plural
But this can't be the dates are still available? dates is listed in the hover dictionary
my questions as well-
Agreed. It makes sense if you're talking about booking a venue or something.
Yes, I used, "The dates themselves are still available." It was accepted.