INTERNAL

• The suitable IV ranges have...

  1. 5 values
  2. Cover suitable range
  3. Evenly spaced
• Where to look for information?

  1. Background information
  2. Table
• Worst fit - best fit
• Best fit + or - difference
• Comparison State for Y-intercept and X value: If the THEORETICAL VALUE fits into the range given by the graph.
• For the graph you will NEED:

  1. Vertical error bars
  2. Regression Line
  3. Symbols matching the title
  4. Optional regression line WITH equation!
• Uncertainty range is the range of possible values for a variable of measurement
• Questions to ask yourself when analysing repeat trials in an investigation

  1. Have they achieved concordant results?
  2. For this, investigation how much time would it take to complete 1 trial?
• Repeat trials are done to improve precision
• Short amount of time (less than a day) do as many trials as you need to get (3) similar results.
• Longer amount of time (more than 1 day) at least 5 trials to allow for some results to be discarded if they are not consistent.
• How do we compare data?

  % difference = measure value-expected value/expected value *100%
• Expected value = Theotrical value
• An outlier is a data point that is different from the pattern of data
• Outlier: Significant difference from the major trend line
• Outliers compare to graph, table or conculsion