• Want to take part in this year's BoS Trials event for Maths and/or Business Studies?
    Click here for details and register now!
  • YOU can help the next generation of students in the community!
    Share your trial papers and notes on our Notes & Resources page

Mistake in 2005 HSC? (1 Viewer)

pkc

Member
Joined
Apr 16, 2006
Messages
155
Gender
Male
HSC
N/A
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

Recession '08
Joined
Apr 19, 2006
Messages
823
Location
inner west
Gender
Male
HSC
2006
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......
 

Users Who Are Viewing This Thread (Users: 0, Guests: 1)

Top