More that two separate analyses are run on the same sample using the same sample volume and testing technique Usually the average result is reported Example: running more than two TSS on the plant effluent These are used to check laboratory procedure and precision
These are often useful to test lack-of-fit On the summary screen and the headings of the output data there appears the information about the number of data points If there are replicates, the number of set points are also reported, which is the number of distinct independent or design variable combinations used (the number of parameters should be smaller or equal to the number of set points) Under ANALYSIS/LACK-OF-FIT the actual statistical test is performed
Replicates are individuals or groups that are exposed to the same conditions in an experiment, including the same level of the independent variable In a typical bioassay, you might test 5 different solution concentrations For each of these concentrations, you might use 3 petri dishes, each containing 5 lettuce seeds At each concentration, the 3 dishes are replicates
In the manufacturing of a CD-ROM, to mold the actual disc by injecting molten polycarbonate into the mold cavity (stamper), then quickly cool the plastic to harden it, a process which takes less than 15 seconds After replication of the disc, art is printed onto the non-data side of the disc via silk-screen or offset printing
If you replicate someone's experiment, work, or research, you do it yourself in exactly the same way. He invited her to his laboratory to see if she could replicate the experiment. = duplicate
Repeated operation occurring within an analytical procedure Two or more analyses for the same constituent in an extract of a single sample constitutes replicate extract analyses
To store an identical copy of a data object on a different physical resource Provides redundancy/backup in case of failure of a physical resource Facilitates faster access if, when accessing a data object, you access the one closest to you The user can choose a particular replica to work with, or the SRB will pick one if one is not specified
an adjective or verb referring to the taking of more than one sample or to the performance of more than one analysis Incorrectly used as a noun in place of replicate analysis Replicate is to be used when referring to more than two items See Duplicate