how would an anomalous result affect PRECISION of data
- identify anomality from results table
- reduces REPATABILITY of data
- thus increases standard deviation.
using this graph EVALUATE the claim/students statement
Any statistical tests done? e.g if we are looking at correlation has spearman’s Rho been done.
look at the sample size, is it biased
is there anything to to solidify that the correlation=causation
does it only look at one factor that impacts what we are evaluating.
student uses a measuring cylinder to the nearest 1cm3 to measure volume of oxygen how could they be more accurate?
use a cylinder with a smaller resolution
what are ‘explain’ type questions asking you for?
link to a particular point in the statment/graph/table
then explain the biology behind it
then repeat for how ever many marks necesarry
why would clones be used in an experiment?
are genetically identical so we are able to control more variables about the sample
why are mean’s created?
allows data to be more reliable
identify anamolies to data
which situations would you use a line graph?
when data is continuous
If chemicals were used in an experiment why would equipment be washed with distilled water ?
remove the if anything else could react with the silver nitrate.
appartus that is a pipette that would allow for precise measurment
A graduated pipette/volumetric pipette.
if you get a 4 marker evaluate question with a graph or chart of some kind what MUST you bring up/mention
DATA from the graph and a clear comparison or difference
if a statistical test/analysis hasn’t been carried out mention it
If population size isn’t known and if data is self-report or not.
