Mistake in 2005 HSC? (1 Viewer)

[pkc]

Anyone notice a possible mistake in Q12 of multiple choice?

"12) A student performed a sampling technique as part of a first-hand investigation on water quality and repeated the sampling technique several times.
What aspect of the experiment was improved by repeating the procedure?"

The marking notes say the answer is B) Reliability.

The definition of first-hand reliability in BOS Science Syllabus 7-10 states that it is "the degree to which repeated observations and/or measurements taken under identical circumstances will yield the same results."

How can the degree of similarity between results be increased by taking more of them, if anything the spread will get bigger ???

 

[onebytwo]

this is strange indeed, i was doing online multi choice on th eboard of studies web site and this question came up. i thought it was b) reliability answer, but it ended up being wrong they said it was something else, cant remember......