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Chapter 2 Organizing the DataPowerPoint Presentation

Chapter 2 Organizing the Data

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Chapter 2 Organizing the Data

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- Frequency distribution of nominal data consists of two columns:
- Left column has characteristics (e.g., Response of Child)
- Right column has frequency (f)

- Comparisons clarify and add information

- Compare the same population at two points in time
- Rate of Change =
time 2f – time1f

time 1f

(100)*

1Source: National Crime Victimization Survey

N = 77688

Pie Chart

Histogram of Distribution of Children

in Little Rock Community Survey

Number of Adolescents (< 18 y/o)

Using for the First Time by Month

Leptokurtic

Platykurtic

Mesokurtic

Some Variation in Kurtosis among Symmetrical Distributions

Negatively skewed

Positively skewed

Symmetrical

(Normal)

Three Distributions Representing Direction of Skewness