Marian puts a graduated cylinder marked off in
milliliters on a scale and
resets the scale to zero
so that it will not count
the mass of the cylinder.

Then Marian pours
some water into the
cylinder and records
the volume and mass
of the water.(10ML)

Next, Marian adds
some more water and
records the volume
and mass again.(17 mL)

Finally, Marian calculates
the density of water based
on her measurements.
10.13g/10mL = 1.013 g/mL
17.91g/17mL = 1.054 g/mL
Take the average of the two
measurements:
(1.013 + 1.054) ÷ 2 = 1.034.
So the density of water is
about 1.034 g/mL

Meanwhile, Jamal goes online and finds the
following information on three reliable web sites:The density of
water is 1 g/mL
(one gram per
milliliter).

Which student do you think got the most accurate answer, Marian or
Jamal?