demand works

• compare

  describe the similarities and/or differences
• describe

  list the facts, events or process in an accurate way
• design

  set out how something will be done
• determine

  use given data or information to obtain an answer
• evaluate

  use information provided as well as their knowledge and understanding to consider evidence for and against when making a judgement
• explain

  state what is happening and give a reason because
• plan

  write a method
• suggest

  apply your own knowledge to a new situation
• calculate

  use numbers given in question to work out an answer
• continuous data

  Both variables (IV and DV) are number values within a range. Line graph
• categoric data

  When the independent comes in clear categories, blood groups, colours etc. Bar chart
• repeatable

  If the same person does the experiment again, they get similar results
• reproducible

  If someone else did the experiment the results would be similar
• accurate results

  close to the true value
• precise results

  Results are all close together in your repeats
• systematic error

  The measurements are wrong by the same amount every time. Problem with the measuring tools
• random error

  Mistakes made when measuring, errors out of your control e.g. human errors
• positive correlation

  As one variable increases the other increases
• inverse(negative) correlation

  As one variable increases the other decreases
• no correlation

  no relationship between the two variables