In probability theory and statistics, variance is the expectation of the squared deviation of a random variable from its population mean or sample mean. Variance is a measure of dispersion, meaning it is a measure of how far a set of numbers is spread out from their average value. Variance has a central role in statistics, where some ideas that use it include descriptive statistics, statistical inference, hypothesis testing, goodness of fit, and Monte Carlo sampling. Variance is an important tool in the sciences, where statistical analysis of data is common. The variance is the square of the standard deviation, the second central moment of a distribution, and the covariance of the random variable with itself, and it is often represented by , , , , or .
Sceloporus grammicus is a species of lizard from Mexico and the southern United States. It is sometimes referred to as the mesquite lizard or graphic spiny lizard.
The Jamaican owl is a medium-sized owl that is endemic to the island of Jamaica.
The scaly-breasted woodpecker, also known as the scale-breasted woodpecker, is a bird species in the family Picidae. It is found in Bolivia, Brazil, Colombia, Ecuador, French Guiana, Peru, and Venezuela. Its natural habitat is subtropical or tropical moist lowland forests.
Cylindrepomus is a genus of longhorn beetles of the subfamily Lamiinae, containing the following species:
Cylindrepomus bivitticollis is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1947.
Cylindrepomus flavus is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1947.
Cylindrepomus rufofemoratus is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1947.
Cylindrepomus filiformis is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1938.
Cylindrepomus javanicus is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1936.
Cylindrepomus sexplagiatus is a species of beetle in the family Cerambycidae. It was described by Stephan von Breuning in 1936.
Cylindrepomus elisabethae is a species of beetle in the family Cerambycidae. It was described by Hüdepohl in 1987.
Cylindrepomus spinosus is a species of beetle in the family Cerambycidae. It was described by Hüdepohl in 1990.
Cylindrepomus fouqueti is a species of beetle in the family Cerambycidae. It was described by Pic in 1932, originally under the genus Olenecamptus.
Cylindrepomus vittatus is a species of beetle in the family Cerambycidae. It was described by Pic in 1925, originally under the genus Hippardium.
Cylindrepomus laetus is a species of beetle in the family Cerambycidae. It was described by Pascoe in 1858. It is known from Malaysia, Sumatra and Java. It contains the varietas Cylindrepomus laetus var. shelfordi.
Cylindrepomus peregrinus is a species of beetle in the family Cerambycidae. It was described by Francis Polkinghorne Pascoe in 1858.
Cylindrepomus nigrofasciatus is a species of beetle in the family Cerambycidae. It was described by Blanchard in 1853. It contains the varietas Cylindrepomus nigrofasciatus var. fulvithorax.
Cylindrepomus sexlineatus is a species of beetle in the family Cerambycidae. It was described by Schultze in 1934. It is known from Borneo and the Philippines.
Hathliodes grammicus is a species of beetle in the family Cerambycidae. It was described by Francis Polkinghorne Pascoe in 1859. It is known from Australia.
