Chapter 2 organizing the data
This presentation is the property of its rightful owner.
Sponsored Links
1 / 27

Chapter 2 Organizing the Data PowerPoint PPT Presentation


  • 85 Views
  • Uploaded on
  • Presentation posted in: General

Chapter 2 Organizing the Data. Nominal Data and Distributions. Frequency distribution of nominal data consists of two columns: Left column has characteristics (e.g., Response of Child) Right column has frequency ( f ). Comparing Distributions. Comparisons clarify and add information.

Download Presentation

Chapter 2 Organizing the Data

An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -

Presentation Transcript


Chapter 2Organizing the Data


Nominal Data and Distributions

  • Frequency distribution of nominal data consists of two columns:

    • Left column has characteristics (e.g., Response of Child)

    • Right column has frequency (f)


Comparing Distributions

  • Comparisons clarify and add information


Illustration: Gender of Students Majoring in CJ(f)


Illustration: Gender of Students Majoring in CJ (f and %)


Rate of Change

  • Compare the same population at two points in time

  • Rate of Change =

    time 2f – time1f

    time 1f

(100)*

1Source: National Crime Victimization Survey


Ordinal/Interval Data and Distributions


Grouped Frequency Distributions of Interval Data


Flexible Class Intervals

N = 77688


Grouped Frequency Distributions of Interval Data


Grouped Frequency Distributions of Interval Data


Chapter 2 Day 2


Cross-tab


Cross Tabulations – Victim-Offender Relationship by Gender of Victim for Homicides in US for 2005 (With Row%)


Cross Tabulations – Victim-Offender Relationship by Gender of Victim for Homicides in US for 2005 (With Row%)


Cross Tabulations – Victim-Offender Relationship by Gender of Victim for Homicides in US for 2005 (With Row%)


Cross Tabulations – Victim-Offender Relationship by Gender of Victim for Homicides in US for 2005 (With Row%)


Pie Chart


Exploded Pie Chart


Bar Graph


Histogram of Distribution of Children

in Little Rock Community Survey


Frequency Polygon Example


Number of Adolescents (< 18 y/o)

Using for the First Time by Month


Kurtosis

Leptokurtic

Platykurtic

Mesokurtic

Some Variation in Kurtosis among Symmetrical Distributions


Skewness

Negatively skewed

Positively skewed

Symmetrical

(Normal)

Three Distributions Representing Direction of Skewness


  • Login