Revison Cards

Question 1

How does the mnemonic:

ChIMeD

help you remember the difference between the IV and the DV?

Answer 1

Ch-ange
I-ndepedent
Me-asure
D-ependent variable

Question 2

Devising an experiment: you need to include all from your mnemonic: COTRIMS.

What does COTRIMS stand for?

Answer 2

C control for comparison 
O organism
T Time scale
R repetition for reliability
I independent variable 
M measure
S same (what your keeping the same)

Question 3

Suggest how scientists can find out if any result of theirs is an anomaly.

Answer 3

repeat the experiment

Question 4

Drawing a graph: you need to include all from your mnemonic: SKALPU.

What does SKALPU stand for?

Answer 4

S scale: takes up at least half the graph
K key (if necessary)
A axes: plot IV on ‘x’ and DV on ‘y’; label them
L line: with a ruler and dot-to-dot
P points: plotted accurately
U units: include IV units and DV units on axes

Question 5

Where in a table of results
does the IV
and the DV go?

Answer 5

IV in left hand column and

DV and repeats to the right hand side

Question 6

Which axis on a graph has:
the IV?
the DV?

Answer 6

y-axis =DV

X-axis-IV

Question 7

What is the difference between:
repeatability and
reproducibility?

Answer 7

You can check the repeatability of your results by checking that your repeats are similar.

You can check the reproducibility of your data by comparing it to those of other groups and seeing whether each group agrees with your conclusion.

Question 8

What does reliability mean?

Answer 8

If it can be repeated again to get the same results

Question 9

What does validity mean?

Answer 9

This relates toexperimental method and how appropriate it is in addressing the aim ofyour experiment.

Question 10

What is a control group?

Answer 10

A group that does not have the independent variable in it so that it is something for you to compare it with.

Question 11

What is an anomaly?

Answer 11

A data point that does not fitthe trend of your other results.

Question 12

What is a trend?

Answer 12

An observable pattern in your results.

Question 13

What does the range of data mean?

Answer 13

This expressess the maximum and the minimum data points and helps to find the values where your data falls.

Question 14

What does accuracy mean?

Answer 14

This expresses how close your measurement is to the true value

Question 15

What does precision mean?

Answer 15

This expresses how well you measured during the experiment.