Common Mistakes made were:
- forgetting units in table headings
Graph
- not labelling axes correctly (with units)
- poor scales
- not differentiating the two types of points
- poor best fit curve
- working for gradient not shown on the graph (large triangle and coordinates of end-points stated)
Three common shapes of graph are:
Your description of the graph m
ust allow the reader to differentiate which one you are referring to.
A increases as B increases.
C is directly proportional to D
E is linearly related to F.
Reminder:
Gradient = Δy/Δx
Resistance = y/x i.e R=V/I
y/x ≠ Δy/Δx (except for a straight line passing through (0,0).)