Information and Knowledge Management using ArcGIS ModelBuilder

Graham Fletcher and Marie Cahillane
Figure 2: The sum of the probability distributions for the before and after data sets, the grey area
highlights the difference or “distance” measure used in the statistical bootstrapping
analysis, the x axis is each of the possible questionnaire answers in likert form, the y axis
is the sum of the probability distribution curves for each participant
Figure 3: Probability distributions for one example of data sets created by random mixing as required
by the statistical boot strapping analysis, the grey area highlights the difference or
“distance”, the x axis is each of the possible questionnaire answers in likert form, the y axis
is the sum of the probability distribution curves for each participant
3.2.1 Hypothesis 1: Exposure to a systematic review will change the opinion of knowledgeable
participants.
The data gathered when investigating this hypothesis falls into two populations, before and after. The
null hypothesis is that these populations are subsets of the same population. I.e. that exposure to the
study has not changed opinion.
The efficacy and confidence were calculated for each subject, both before and after the study. These
values were used to produce a probability distribution curve representative of the 2 populations.
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