Explain the concept of measures of dispersion.
What will be an ideal response?
Measures of dispersion are statistics that describes the degree to which cases are clustered or spread out.
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The 55-mph speed limit was introduced in the U.S. in 1973. Shortly thereafter the number of auto accidents declined. We can conclude that
a. the reduced speed limit caused the decline in auto accidents. b. the reduced speed limit may have caused the decline in the number of auto accidents. c. the reduced speed limit and the number of auto accidents are causally related. d. the reduced speed limit had nothing to do with the decline in auto accidents.
The "Clean Election" laws that are implemented in many states are meant to:
a) Ensure that candidates do not resort to negative campaigning techniques b) Ensure that candidates use only respecttful, non-offensive language when addressing the public. c) Promote green practices and use of renewable energy in campaigns. d) Minimize the influence of large donors on election outcomes.
Qualitative methods:
a. Emphasize precise and generalizable statistical findings. b. Are likely to tap deeper meanings. c. Cannot be combined with quantitative methods in the same study. d. Eschew objectivity entirely.
Unfortunately, nothing can be done to treat impotence among older men because the causes are mostly physiological
Indicate whether the statement is true or false