17. M E A S U R I N G T H I N G S D A T A C O L L E C T I O N
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22. CLOSED QUESTIONS Answers are (to be) in a specified format. -- Dichotomous two options YES/NO Main disadvantage – does not allow ‘shades of grey’ Eg. Has your ailment been treated (/managed) with yoga therapy? VERSUS Do you feel there is an improvement in your condition following yoga? Here wording of the questionnaire allows ‘ shades of grey ’
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25. GRID / MATRIX More than one cell may have to be filled in, as relevant. Eg. Which of the following do you practice? MEDITATION KRIYAS PRANAYAMA ASANAS How many min(s)/day Tick if you practice
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27. OPEN QUESTIONS “Describe how you feel _________” Open questions are descriptive (a qualitative method of research) Organizational questions These questions Build on a response FUNNEL Direct the response FILTER
44. VARIANTS The IV may also have >2 levels = Short / Medium / Long There may be >1 IV 2 There may be two treatments for mobility in children (Treatment A) (Treatment B) This gives a 2 x 2 design Adult Children Trt B Trt A group
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49. The bell shaped curve – normal distribution Z value = no. of standard deviations 95.5 99.7% 68.3 +3 +2 +1 -1 -2 -3
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51. Back to inferential stats taking into account factors. IN SUMMARY These points form the basis – choose inferential stats RESEARCH DESIGN TYPE OF DATA No. of conditions No. of IV Subject allocation Levels Nominal Ordinal Distribution of data Homogenous Non-homogenous Interval Ratio Diff subj Same subj Matched subjects
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54. FLOW CHART LOOKING FOR DIFFERENCES SAME, MATCHED, DIFFERENT? Same / matched Different How many conditions? 2 3 or more Variance ? homogeneity Variance ? homogeneity Equal Not Not Equal Parametric related T test Non-parametric Wilcoxon test Fried man test One way ANOVA Schutte test
55. DIFFERENT SUBJECTS HOW MANY GROUPS 2 3 or more Variance ? homogeneity Variance ? homogeneity Equal Not Not Equal Parametric Unrelated T test Unparametric Chi-Square Mann-Whitney test Kruskal-Wallis test One way Unrelated ANOVA
56. Flow chart looking for correlations HOW MANY GROUPS 2 3 or more Variance ? homogeneity Variance ? homogeneity Equal Not Not Equal Person test Spearman test Kendall’s coefft of concordance No definite test
