CRM 1300 Lecture Notes - Uniform Crime Reports, Victimology, Data Element

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cameronzic27

20 Oct 2022

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Document Summary

As official sources of statistics have increased, and as creative methodologies for data collection have advanced, reliability and validity have become the most pressing concerns. Police cannot record unreported crime or crime of which they are unaware. The further into the cjs you go, the more obvious it becomes that you are collecting statistics on how the cjs operates. Foor example, data on the prison population provide valid indicators of one way that a society responds to crime, but are not a valid measure of the scope and nature of crime. The goal of uniform crime reports is to provide uniform and comparable national statistics. Ucr aggregate survey: collects summary data for 100 separate criminal offences. Ucr incident-based survey: collects more detailed information on each incident, victims, and accused. It is not always clear what is being counted. The crime rate does not differentiate between serious (indictable) and less serious (summary) offences.

Related Questions

1) The main purpose of descriptive statistics is to

A. Summarize data in a useful and informative manner.
B. Estimate a population characteristic based on a sample.
C. Determine if the data adequately represents the population.
D. Gather or collect data.

violetmallard962

1. Matt, the manager, wants to estimate the mean wait time for customers to check out in his Mini-Market. He randomly selects customers and determines the mean wait time is minutes. Define the following for this exercise:

a) Is the data collected qualitative or quantitative?

b) Variable (x):

c) Population of Interest:

d) Sample:

e) Parameter of Interest and Statistic: Do you expect the parameter and the statistic to be the same value? Explain.

f) Discuss the use of descriptive and inferential statistics in this exercise.

g) Is the variable, x, discrete or continuous?

2. Identify the population and sample for the following examples:

The P.E. coach of a middle school interested in the mean height for the graders in the school. He randomly selects graders and measures the height of each.

a) Population:

b) 7thgraders Sample:

c) A community college notices that an increasing number of full-time students are working while attending school. The administration randomly selects 200 students and determines how many hours per week each student works.

fuchsiatermite35

1. Matt the Manager wants to estimate the mean wait time for customers to check out in his Mini-Market. He randomly selects 40 customers and determines the mean wait time is 2.7 minutes. Define the following for this exercise:Experimental Unit or Individual: Is the data collected qualitative or quantitative?Variable (x):Population of Interest:Sample:Parameter of Interest:Statistic:Do you expect the parameter and the statistic to be the same value? Explain.Discuss the use of descriptive and inferential statistics in this exercise.Is the variable, x, discrete or continuous?

2. Identify the populationand samplefor the following examples:a)The P.E. Coach of a middle school interested in the mean height for the 7thgraders in the school. He randomly selects 40 7thgraders and measures the height of each.Population: 7thgraders Sample: 40 7thgraders chosenb)A community college notices that an increasing number of full-time students are working while attending school. The administration randomly selects 200 students and determines how may hours per week each students works.

fuchsiatermite35

CRM 1300 Lecture Notes - Uniform Crime Reports, Victimology, Data Element

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