grab sample

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Noun1.grab sample - a single sample or measurement taken at a specific time or over as short a period as feasible
sample - a small part of something intended as representative of the whole
statistics - a branch of applied mathematics concerned with the collection and interpretation of quantitative data and the use of probability theory to estimate population parameters
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There are two overlapping culprits, and each plays a significant role: passage of time and misinterpretation of grab sample data.
The high value was from a selected grab sample of quartz vein material taken at the dump of an artisan working.
An initial surface grab sample returned assays of 1.
The first phase of work on the properties will be the establishment of a grid over the Cheechoo A block claims to complete ground geophysical and geological surveys for the purpose of defining drill targets, to follow up on rock grab sample assay results obtained from the fall 2005 mapping and prospecting program (refer to the December 5, 2005 press release for further information).
the SC-95-02 showing has returned values up to 772 parts per million cobalt ("ppm Co"), 2,108 parts per million copper ("ppm Cu") and 3,907 parts per million nickel ("ppm Ni") in grab samples of pyrrhotite and chalcopyrite mineralization in anorthositic gabbro;