4. Examples of types of data Quantitative Continuous Discrete Blood pressure, height, weight, age Number of children, Number of attacks of asthma per week Categorical Ordinal (Ordered categories) Nominal (Unordered categories) Grade of breast cancer Better, same, worse Disagree, neutral, agree Sex (male/female) Alive or dead Blood group O, A, B, AB
31. Measures of Central Tendency It is calculated as follows.
32. Mean (Arithmetic Mean) or Average
34. Median .
37. Measures of Relative Position (Quantiles)
39. Measures of Variability
40. Measures of Variability
42. Interquartile Range
43. Standard Deviation
44. <ul><li>measures variability in relation to the mean (or average) and is used to compare the relative dispersion in one type of data with the relative dispersion in another type of data. </li></ul><ul><li>The data to be compared may be in the same units, in different units, with the same mean, or with different means. </li></ul>Coefficient of Variation