Practical skills - presenting data

Question 1

What guidelines should a student follow when drawing diagtrams?

Answer 1

• sharp pencil
• ruled label lines
  
  • outside diagram
• include scale bar
  
  • include magnification
• title
• fill at least 50% of page
• do not shade- clear bold lines
• continuous lines
• plain paper
• correct proportions

Question 2

What are standard deviation bars?

Answer 2

• e.g if SD is 5
  
  • draw an error 5 above and 5 below the top of the data

Question 3

WHat does it show if SD bars overlap?

Answer 3

• unlikely to be statistically significant
• use T-test