A statistic based on the mean and gives an average distance between all scores and the mean is called the ______________
Fill in the blank(s) with correct word
standard deviation
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True or False: If a file has been deleted and partially overwritten, it is still possible to recover the file fragment that has not been overwritten
a. True b. False
Critical infrastructures rely on each other and a failure in one sector could lead to a cascading failure in others
a. True b. False
______ is an observational technique in which the researcher is acting as the deviant group would by being fully engaged in the natural environment and does not identify himself as a researcher.
a. Covert observation b. Overt observation c. Participant observation d. Laboratory observation
Derived from opium, __________________ is the most commonly used narcotic among adults in the United States
a. Tobacco c. Marijuana b. Alcohol d. Heroin