Search results
Results from the WOW.Com Content Network
The gridded area of the Improved Neubauer ruled hemocytometer consists of nine 1 x 1 mm (1 mm 2) squares. These are subdivided in three directions; 0.25 x 0.25 mm (0.0625 mm 2), 0.25 x 0.20 mm (0.05 mm 2) and 0.20 x 0.20 mm (0.04 mm 2). The central square is further subdivided into 0.05 x 0.05 mm (0.0025 mm 2) squares. The raised edges of the ...
Algorithms for calculating variance play a major role in computational statistics.A key difficulty in the design of good algorithms for this problem is that formulas for the variance may involve sums of squares, which can lead to numerical instability as well as to arithmetic overflow when dealing with large values.
Given a formal Laurent series = =, the corresponding Hankel operator is defined as [2]: [] [[]]. This takes a polynomial [] and sends it to the product , but discards all powers of with a non-negative exponent, so as to give an element in [[]], the formal power series with strictly negative exponents.
where C is the circumference of a circle, d is the diameter, and r is the radius.More generally, = where L and w are, respectively, the perimeter and the width of any curve of constant width.
In mathematics, a moment matrix is a special symmetric square matrix whose rows and columns are indexed by monomials.The entries of the matrix depend on the product of the indexing monomials only (cf. Hankel matrices.)
One computational method which can be used to calculate IV estimates is two-stage least squares (2SLS or TSLS). In the first stage, each explanatory variable that is an endogenous covariate in the equation of interest is regressed on all of the exogenous variables in the model, including both exogenous covariates in the equation of interest and ...
The numbers are based on a $50 a square game, with a $625 payout for the 1st and 3rd quarters, a $1,250 payout for halftime, and a $2,500 payout for the end of the game. (The cells are colored ...
A matrix C is called Cauchy-like if it is of the form =. Defining X=diag(x i), Y=diag(y i), one sees that both Cauchy and Cauchy-like matrices satisfy the displacement equation