Continuous variation: mass, hand span, IQ score, height, controlled by both genes and environment , data produces a graph with a bell shaped curve, low frequency at extremes, high frequency at the mean, Always measured in numbers, Discontinuous variation : eye colour, blood type, curling your tongue, gender, controlled by just the genes inherited from your parents, shape of ear lobe, bar charts display this data, Also called Categoric Data,

continuous and discontinuous variation

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