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...Ssc cgl tier statistics last minute study notes measures of central tendency one the main objectives a statistical analysis is to obtain value that describes characteristics entire data such called also facilitate comparison between by reducing mass single are mean most widely used measure computed adding all values variable and dividing total number i e sum observations divided for eg find even numbers these there median refers middle in distribution case half equal or less than other greater it splits observation into two halves score when ordered from smallest largest if n an odd then on position average positions thus mode modal series which occurs with greatest frequency often tie will have modes bimodal relationship p g scales measurement nominal scale can simply be broken down categories ordinal categorized placed order ranking interval ranked but has no absolute zero point ratio allows compare meaningful only may partition samples arranged ascending descending divides parts sim...