Ch3_DescribingData

Ch3_DescribingData - Chapter3 DescribingData:Frequency...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Chapter 3 Describing Data: Frequency  Distributions and Graphs
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Data Data are the scores of measurements of behavior or  characteristics obtained from observation.   This may consist of  numbers words , or  images .  In  general, data are  measurements  or observations of a  set of  variables .  
Background image of page 2
Raw Data Raw data, or raw scores, refer to numeric values  collected from your subjects, or study participants.  61 57 60 62 68 59 62 59 64 60 59 67 55 65 63 59 67 60 59 64
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Frequency Distribution We usually like to have a clear and systematic way to  present the data we collected. Frequency distribution is a table showing a set of ordered  scores and how frequently each score occurred.
Background image of page 4
Ungrouped Frequency Distribution A frequency distribution constructed by listing all possible  score values between the lowest and highest scores  obtained, and then placing a tally mark beside a score  each time it is repeated.
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Raw Data Set 1 61 57 60 62 68 59 62 59 64 60 59 67 55 65 63 59 67 60 59 64 Link to EXCEL file Largest score: 68 Smallest score: 55 Link to EXCEL file Largest score: 68 Smallest score: 55
Background image of page 6
Ungrouped Frequency Distribution Score Tally  Freq. Relative Freq. % Freq. 68 67 66 65 64 63 62 61 60 59 58
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Ungrouped Frequency Distribution Score Tally  Freq. Relative Freq. % Freq. 68 / 67 // 66 65 / 64 // 63 / 62 // 61 / 60 /// 59 ///// 58
Background image of page 8
Ungrouped Frequency Distribution Score Tally  Freq. Relative Freq. % Freq. 68 / 1 67 // 2 66 0 65 / 1 64 // 2 63 / 1 62 // 2 61 / 1 60 /// 3 59 ///// 5 58 0
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
The frequency of a score divided by the total number of  scores obtained. rf
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 11/30/2009 for the course HP 400m at USC.

Page1 / 40

Ch3_DescribingData - Chapter3 DescribingData:Frequency...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online