Search results
Results From The WOW.Com Content Network
In statistics, missing data, or missing values, occur when no data value is stored for the variable in an observation. Missing data are a common occurrence and can have a significant effect on the conclusions that can be drawn from the data. Missing data can occur because of nonresponse: no information is provided for one or more items or for a ...
Imputation (statistics) In statistics, imputation is the process of replacing missing data with substituted values. When substituting for a data point, it is known as " unit imputation "; when substituting for a component of a data point, it is known as " item imputation ". There are three main problems that missing data causes: missing data ...
The main academic full-text databases are open archives or link-resolution services, although others operate under different models such as mirroring or hybrid publishers. Such services typically provide access to full text and full-text search, but also metadata about items for which no full text is available.
In computing, a directory service or name service maps the names of network resources to their respective network addresses.It is a shared information infrastructure for locating, managing, administering and organizing everyday items and network resources, which can include volumes, folders, files, printers, users, groups, devices, telephone numbers and other objects.
Multiple imputation is an alternate technique for dealing with missing data that attempts to eliminate this bias. Compared to other methods. While listwise deletion does have its problems, it is preferable to many other methods for handling missing data.: 7 In some cases, it may even be the least problematic method.
8. Spy Dialer. Spy Dialer is a free reverse phone lookup service that accesses public databases of registered phone numbers to help users find information on cell phone and landline numbers and ...
ISBNdb.com. ISBNdb.com is a large online database of book information available both via web interface and API. The database includes title, author, ISBN, ISBN13, publisher, publishing date, binding, pages, list price, and more. [1] It contains data on 33+ million books by more than 11 million authors, with more books added every day. [2]
These numbers fell again on Dec. 30, 2014, with the inclusion more recent data adding more than 1,600 inspections. This tool was also updated to allow users to search for a hospice by name and to more clearly label building code violations.