concordant titres

[starburst.95]

I was just doing a stav paper and the questions says:
   Find the average volume of the concordant titres:
                   16.87 16.15,17.03and 16.93
I thought all the values were concordant but the soultion says only 16.87,17.03 and 16.93 were.
I'm so confused :S. Help please?

[meemz]

you take the 3 which is the closest together for average titre, in this case 17.03,16.93 and 16.87.. 16.15 canbe seen as an outlier

[starburst.95]

but i thought that you could take all as long as the difference is only 0.1 btw the highest and the lowest??
and in this case its 0.88..

[soccerboi]

but i thought that you could take all as long as the difference is only 0.1 btw the highest and the lowest??
and in this case its 0.88..

Yeh heinemann textbook say between 0.1ml. I remember seeing this question, it's a bit dodgy, probably best to ignore it. Its unlikely that VCAA would put titre values as dodgy as these ones.

[Hutchoo]

It's a pretty stupid question. Usually speaking, concordant titres are supposed to be between +/- 0.10mL, but seeing as this guy who did the titrations sucks, the value seems to be +/- .16ml.

[starburst.95]

so can four samples be concordant or is it only three?

[soccerboi]

so can four samples be concordant or is it only three?

Yeh you can have four as long as they all fall within the range for concordant titres