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Related to estimator: Unbiased estimator

ballpark estimate

An approximate estimate. Mary contacted several plumbers to get a ballpark estimate of the cost to fix her leaky toilet.

estimate the cost at (something)

To predict that something will cost a certain amount. Unfortunately, I would estimate the cost of these car repairs at \$1,000.

estimate the cost at

(some amount) to approximate the cost of something at a particular amount. I estimate the cost at about one hundred dollars. The cost of repairing the car was estimated at over four thousand dollars!
McGraw-Hill Dictionary of American Idioms and Phrasal Verbs. © 2002 by The McGraw-Hill Companies, Inc.

or

a ballpark estimate

A ballpark figure or a ballpark estimate is an approximate figure or quantity. Note: A ballpark is a park or stadium where baseball is played. But what are we talking about here — a few thousand, millions, two bucks? Give me a ballpark figure. I think just in a ballpark estimate — about 60-40. Sixty would support, 40 percent would be opposed.
Collins COBUILD Idioms Dictionary, 3rd ed. © HarperCollins Publishers 2012

a ˈballpark figure

a number which is approximately correct: I know we haven’t really discussed costs yet, but can you give me a ballpark figure?
Farlex Partner Idioms Dictionary © Farlex 2017
References in periodicals archive ?
Azmy, "A Residual-based A Posteriori Estimator of the Spatial Approximation Error for Discrete Ordinates Solutions of the Transport," in Proceedings of the International Conference on Mathematics & Computational Methods Applied to Nuclear Science & Engineering, Jeju, Korea, 2017.
Caption: Figure 2: Histogram of effectivity for two-mesh estimator.
Caption: Figure 6: Box-plot representing the ranks of each estimator, based on the results for the six Pittosporum undulatum plots.
The bars represent the ratio between the coefficient of variation (CV) obtained for each estimator and the CV obtained when using quadrat counts.
Further, the rest of the paper is organized as follows: the necessary and sufficient condition for dominance of the PCTP estimator over the r-(k, d) class estimator under the MSE matrix criterion has been derived in Section 2.
The MSE matrix criterion is a strong and one of the most widely used criteria for comparison of the estimators. Let [??] be an estimator of [beta]; then the expression for the MSE matrix is given as
The Tukey (1991) biweight function that has a smooth [psi] is used for both the preliminary S-estimator, as well as the final MM-estimator.[mathematical expression not reproducible] is the first-order equivalent with the generalized method of moment estimator for ([beta]', [[beta]'.sub.0], [[sigma].sub.[rho]0)'.
The asymptotic variance of the MM-estimator is available from the standard GMM estimator (top left block of [V.sub.MM]).
A recovery-explicit error estimator in energy norm for linear elasticity, Computer Methods in Applied Mechanics and Engineering 287: 172-190.
Enhanced error estimator based on a nearly equilibrated moving least squares recovery technique for FEM and XFEM, Computational Mechanics 52 (2): 321-344.
By combining sample model (2) and prior information (3), Theil and Goldberger [6] proposed the mixed regression estimator (MRE) as
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