Ch 2 sec 1

Ch 2 sec 1 - HonorsStatistics Chapter2Section1...

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Honors Statistics Chapter 2 Section 1 Mr. Kenneth Horwitz Lesson 2.1
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You have gathered data.  Now  what? You need to organize the data in some meaningful  way. This organization will help you do the appropriate   computational procedures. It will help you draw charts and graphs to illustrate  conclusions. It will help you compare your data to other data sets.
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2-1 Organizing Data Data collected in original form is called  raw data . frequency distribution  is the organization of raw  data in table form, using classes and frequencies.    Nominal- or ordinal-level data that can be placed in  categories is organized in  categorical frequency  distributions .
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What if your raw data looked like this.  (minutes on  the internet) 50, 40, 41, 17, 11, 7, 22, 44, 28, 21, 19, 23, 37, 51, 54, 42,  86 41, 78, 56, 72, 56, 17, 7, 69, 30, 80, 56, 29, 33, 46, 31, 39,  20 18, 29, 34, 59, 73, 77, 36, 39, 30, 62, 54, 67, 39, 31, 53, 44 What conclusions can you draw from this data?
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Frequency Distribution – a method of organizing  data in a chart using classes and frequencies. Lets use the data from the previous slide and create  a frequency distribution.  Lets use 7 classes. With a minimum entry of 7 and a max entry of 86.  
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This note was uploaded on 12/09/2011 for the course STATS 221 taught by Professor Nielson during the Fall '10 term at BYU.

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Ch 2 sec 1 - HonorsStatistics Chapter2Section1...

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