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:

    “Every time an ashtray is missing from a hotel, they don’t come looking for you. But let a diamond bracelet disappear in France and they shout John Robie, the Cat. You don’t have to spend every day of your life proving your honesty, but I do.”
    —John Michael Hayes (b.1919)

    “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)