Victimization Statistical Surveys

(noun)

The survey results are used for the purposes of building a crime index.

Related Terms

Examples of Victimization Statistical Surveys in the following topics:

  • Crime Statistics

    • The two major methods for collecting crime data are law enforcement reports and victimization statistical surveys.
    • The U.S. has two major data collection programs: the Uniform Crime Reports from the FBI and the National Crime Victimization Survey from the Bureau of Justice Statistics.
    • The National Crime Victimization Survey has its use, but it also limited in its scope.
    • One way in which victimization surveys are useful is that they show some types of crime are well reported to law enforcement officials, while other types of crime are under reported.
    • The U.S. has two major data collection programs: the Uniform Crime Reports from the FBI, and the National Crime Victimization Survey from the Bureau of Justice Statistics.

  • Surveys or Experiments?

    • Surveys and experiments are both statistical techniques used to gather data, but they are used in different types of studies.
    • Statistical surveys are undertaken with a view towards making statistical inferences about the population being studied, and this depends strongly on the survey questions used.
    • Polls about public opinion, public health surveys, market research surveys, government surveys, and censuses are all examples of quantitative research that use contemporary survey methodology to answers questions about a population.
    • In statistics, controlled experiments are often used.
    • Surveys and experiments are both techniques used in statistics.

  • Homework

    • A study is done to determine if students in the California state university system take longer to graduate than students enrolled in private universities. 100 students from both the California state university system and private universities are surveyed.
    • According to a YWCA Rape Crisis Center newsletter, 75% of rape victims know their attackers.
    • A recent drug survey showed an increase in use of drugs and alcohol among local high school students as compared to the national percent.
    • Suppose that a survey of 100 local youths and 100 national youths is conducted to see if the proportion of drug and alcohol use is higher locally than nationally.

  • Review

    • What is the minimum number that should be surveyed?
    • Suppose that we randomly survey one person.
    • We randomly survey 16 twenty-year-old college students.
    • Assume that you are an emergency paramedic called in to rescue victims of an accident.
    • The next two questions refer to the following information: A group of Statistics students have developed a technique that they feel will lower their anxiety level on statistics exams.

  • Outcomes and the Type I and the Type II Errors

    • Suppose the null hypothesis, Ho, is: The victim of an automobile accident is alive when he arrives at the emergency room of a hospital.
    • Type I error: The emergency crew thinks that the victim is dead when, in fact, the victim is alive.
    • Type II error: The emergency crew does not know if the victim is alive when, in fact, the victim is dead.
    • α = probability that the emergency crew thinks the victim is dead when, in fact, he is really alive = P(Type I error). β = probability that the emergency crew does not know if the victim is alive when, in fact, the victim is dead = P(Type II error).
    • (If the emergency crew thinks the victim is dead, they will not treat him. )

  • Review

    • The first six exercises refer to the following study: In a survey of 100 stocks on NASDAQ, the average Statistic percent increase for the past year was 9% for NASDAQ stocks.
    • The percent increase for one stock in the survey is the:

  • Violence in Schools

    • In 2007, a nationwide survey conducted by the Center for Disease Control and Prevention found that, during the 30 days before they took the survey, 5.9% of students had carried a weapon to school and 5.5% of students had skipped school because they did not feel safe.
    • In 2007, a nationwide survey conducted by the Centers of Disease Control and Prevention found that, during the 30 days before they took the survey, 5.9% of students had carried a weapon to school, and 5.5% of students had skipped school because they did not feel safe.
    • In the 12 months before they took the survey, 12.4% of students had been in a physical fight on school property at least once.
    • Often, victims are targeted based on their appearance, their gender, or their sexual orientation.
    • Verbal bullying is any slanderous statements or accusations that cause the victim undue emotional distress.

  • Violent Crime

    • A violent crime is a crime in which the offender uses or threatens to use violent force upon the victim.
    • A violent crime is a crime in which the offender uses or threatens to use violent force upon the victim.
    • The comparison of violent crime statistics between countries is usually problematic due to the way different countries classify crime.
    • Often this is not possible because crime statistics aggregate equivalent offences in such different ways that make it difficult or impossible to obtain a valid comparison.
    • The United States Department of Justice Bureau of Justice Statistics (BJS) counts five categories of crime as violent crimes: murder, forcible rape, robbery, aggravated assault, and simple assault.

  • Constructing Public Opinion Surveys

    • There are several ways of administering a survey.
    • Usually, a survey consists of a number of questions the respondent answers in a set format.
    • Few "experts" are required to develop a survey, which may well increase the reliability of the survey data.
    • Statistical techniques can be applied to the survey data to determine validity, reliability, and statistical significance, even when analyzing multiple variables.
    • Short introduction: The interviewer gives the basic information on him/herself and the survey.

  • Understanding Statistics

    • Before a set of statistics can be used, however, it must be made understandable by people who are not familiar with statistics.
    • Use a large enough sample size in your statistics to make sure that the statistics you are using are accurate (for example, if a survey only asked four people, then it is likely not representative of the population's viewpoint).
    • Use statistics that are easily understood.
    • Results from a survey and discussion of key findings such as the mean, median, and mode of that survey.
    • This will likely use more complicated statistics.