Chapter 2 for Stats

# Chapter 2 for Stats - Chapter 2 Organizing and Displaying...

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Chapter 2 Organizing and Displaying Data

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Chapter Two Broad-Based learning goal Describe different methods for organizing and displaying data, and explain why these procedures are useful and important in research and statistics.
Three Types of Distribution Tables Rank Order Distribution Simple Frequency Distribution Grouped Frequency Distribution

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Rank Order Distribution ordered listing of the data in a single column Use: N ≤ 20 Makes it easy to see the highest and lowest scores Range: R = H – L; (H=highest score, L=lowest score)
Create a rank order distribution for the lengths of young-of-the-year freshwater drum (in mm) caught near Rattlesnake Island in Lake Erie: 79, 77, 65, 78, 71, 66, 95, 86, 84, 83, 88, 72, 81, 64, 71, 58, 60, 81 Rank Order Distribution: 58 60 64 65 66 71 71 72 77 78 79 81 81 83 84 86 88 95

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Simple Frequency Distribution ordered listing of variable being studied (X), with a frequency column (f) indicating # of cases at each given value of X Usage: N > 20, R ≤ 20 Allows larger data set to be condensed (i.e. on one sheet of paper)
Construct a simple frequency distribution for the following low temperatures recorded at Phoenix Sky Harbor Airport: 46, 43, 54, 53, 43, 42, 47, 46, 46, 45, 43, 39, 52, 51, 48, 42, 43, 47, 49, 54, 53, 45, 50, 52, 53, 49, 35, 34 Example

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SPSS Output temp 1 3.6 3.6 3.6 1 3.6 3.6 7.1 1 3.6 3.6 10.7 2 7.1 7.1 17.9 4 14.3 14.3 32.1 2 7.1 7.1 39.3 3 10.7 10.7 50.0 2 7.1 7.1 57.1
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Chapter 2 for Stats - Chapter 2 Organizing and Displaying...

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