general exam technique inc maths Flashcards
when asked to evaluate a claim using evidence from a graph (6) what needs to be discussed
an overall statement SUPPORTing the claim
against the claim: could be anything to do with critiquing the graph eg lack of sd bars, units etc, risk of bias as its a claim, is one actually better
issues with validity: controls not specified (gives egs), no control/repeats/method, species not named
when asked to give limitations of a method and explain how it limits validity of conclusion drawn and give an improvement what are some general examples
degree of measurement of dv not considered > biased results > measure it
was not repeated > cannot calculate mean/identify anomalies/do stats tests > carry out at least 3 trials
no method of selecting iv (named) > could lead to biased results > random selection
calculate the length of the line labelled x to Y give ans in micrometres
measure with ruler
cm > mm x10
mm > microm x1000
image/magnification = ans
