Introduction to Statistics: Meaning of Statistics, Introduction to data, Variable, order array, frequency distribution, Types of frequency distribution. Illustrative examples. Central Tendency: Mean: definition and calculation, General and mathematical properties of mean, Combined arithmetic mean, weighted arithmetic mean. Median: definition and calculation, Properties of median, Location of median, Partition values: Quartiles, Deciles, Percentiles, Mode: Definition and calculation, properties of mode, Empirical relation of mean, median and mode. Illustrative examples.