2_Tables_and_Graphs

# 2_Tables_and_Graphs - Descriptive Statistics Tables Graphs Tables You should be able to Dene frequency distribution Construct an ungrouped

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Descriptive Statistics Tables & Graphs Tables

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You should be able to . . . • Defne frequency distribution • Construct – an ungrouped Frequency distribution – a grouped Frequency distribution – a relative frequency distribution • Defne and identiFy outliers ±requency Distribution • Sorted collection oF observations showing the number oF times (or Frequency) each observation occurs • Two kinds: ungrouped grouped
Example • We are interested in the size of science classes in private elementary schools. • We surveyed 25 private schools and determined the number of students in each Ffth grade science class. The data for 25 schools are: 5 15 18 13 14 30 29 20 20 5 14 15 15 17 25 25 20 19 20 20 15 18 20 25 15

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Ungrouped Frequency Distribution No. of Students Frequency 5 2
No. of Students Frequency 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 No. of Students Frequency 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 2

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No. of Students Frequency 30 1 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 2 No. of Students Frequency 30 1 29 1 28 0 27 0 26 0 25 3 24 0 23 0 22 0 21 0 20 6 19 1 18 2 17 1 16 0 15 5 14 2 13 1 12 0 11 0 10 0 9 0 8 0 7 0 6 0 5 2
No. of Students Frequency 30 1 29 1 28 0 27 0 26 0 25 3 24 0 23 0 22 0 21 0 20 6 19 1 18 2 17 1 16 0 15 5 14 2 13 1 12 0 11 0 10 0 9 0 8 0 7 0 6 0 5 2 No. of Students Frequency 30 1 29 1 28 0 27 0 26 0 25 3 24 0 23 0 22 0 21 0 20 6 19 1 18 2 17 1 16 0 15 5 14 2 13 1

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## This note was uploaded on 08/22/2011 for the course PSY 207 taught by Professor Pfordesher during the Fall '07 term at SUNY Buffalo.

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2_Tables_and_Graphs - Descriptive Statistics Tables Graphs Tables You should be able to Dene frequency distribution Construct an ungrouped

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