working scientifically

Question 1

CHIN MEAD SACO

Answer 1

change-independent
measure-dependent
same-control

Question 2

how does range link to certainty?

Answer 2

the smaller the range, the smaller the uncertainty

Question 3

how do you work out the uncertainty?

Answer 3

1. work out range
2. mean of data set
3. mean +/- half of range

Question 4

which column is which on a table (independent/dependent) and the axis?

Answer 4

independent is first column, x axis
dependent is second column, y axis