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Pearson's correlation coefficient is the covariance of the two variables divided by the product of their standard deviations. The form of the definition involves a "product moment", that is, the mean (the first moment about the origin) of the product of the mean-adjusted random variables; hence the modifier product-moment in the name.
The lion (Panthera leo) is a large cat of the genus Panthera, native to Africa and India. It has a muscular, broad-chested body; a short, rounded head; round ears; and a dark, hairy tuft at the tip of its tail. It is sexually dimorphic; adult male lions are larger than females and have a prominent mane.
Montreal. Montreal[a] is the largest city in the province of Quebec, the second-largest in Canada, and the ninth-largest in North America. Founded in 1642 as Ville-Marie, or "City of Mary", [18] it is now named after Mount Royal, [19] the triple-peaked mountain around which the early settlement was built. [20]