Measures of central tendency- quantitative data Mean normal distribution Geometric mean: positively skew and data can be transferred into normal distribution by log scale Median used by all data in general is often used to abnormal dataMeasures of central tendency- quantitative data ▪ Mean: Normal distribution ▪ Geometric mean: positively skew and data can be transferred into normal distribution by log scale. ▪ Median: used by all data, in general, is often used to abnormal data