Missing Data

In statistics, missing data, or missing values, occur when no data value is stored for the variable in the current observation. Missing data are a common occurrence and can have a significant effect on the conclusions that can be drawn from the data.

Read more about Missing Data:  Types of Missing Data, Techniques of Dealing With Missing Data

Famous quotes containing the words missing and/or data:

    If we notice a few errors in the work of a proven master, we may and even will often be correct; if we believe, however, that he is completely and utterly mistaken, we are in danger of missing his entire concept.
    Franz Grillparzer (1791–1872)

    To write it, it took three months; to conceive it three minutes; to collect the data in it—all my life.
    F. Scott Fitzgerald (1896–1940)