One disadvantage of using the range as a measure of dispersion is ______?
A. it uses most of the raw data in a distribution, therefore allowing a researcher little discretion in the analysis
B. it uses very little of the data in a distribution, therefore a researcher has no information regarding the shape of the distribution
C. it offers a researcher so much information regarding the shape of the distribution that subsequent analyses are rendered unnecessary
D. it is not a reliable measure suitable for use with continuous or interval level data
B. it uses very little of the data in a distribution, therefore a researcher has no information regarding the shape of the distribution
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All evidentiary items collected at a crime scene should be
A) secured and transported with an accompanying officer. B) logged into field notes and the official report. C) placed in appropriate containers, if necessary. D) marked with identifying information. E) all of the above.
Which analytical technique is widely used for directly measuring the amount of alcohol present in the blood?
a. Gas chromatography b. Thin-layer chromatography c. Infrared spectrophotometry d. Atomic absorption
What is noted about acceptance of the concept of police-community relations?
a. few individuals accept the concept b. there are many serious dangers to the concept c. no one understands the concept d. it has gained a secure level of acceptance in the law enforcement establishment
The media can be of help to a homicide investigation by all of the following except _____ .
a. alerting the public to a suspect in a murder case b. asking for the public's help in identifying a victim c. asking people to come forward to give information d. publishing information that compromises a case