Chapter 2

Chapter 2: Frequency Distributions and Graphs

Organizing Data ,[object Object],[object Object],[object Object],[object Object]

Birth Month - Data September May July October July August May May March September April August June July February January July January November April July March October December July October January December May March March February November April August July October February April June August August November July September December August July September October August December April September September June November November July July December November May August August December January September May

Grouped Frequency Distribution ,[object Object],[object Object],[object Object],[object Object]

Grouped Frequency Distribution ,[object Object],[object Object],[object Object]

Rules for Constructing a Frequency Distribution ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

How to Construct a Frequency Distribution ,[object Object],[object Object],[object Object],[object Object],[object Object]

Example: Class Age Data ,[object Object],23 19 19 22 20 18 32 27 21 22 22 19 25 20 26 19 19 20 21 22 26 21 18 27 19 27 20 20 23 39 30 21 19 20 49 20 34 24 30 24 22 17 20 19 19 28 27 19 27 24 21 21 20 19 34 19 20 22 25 22 20 20 19 20 24 24 26 20 26

Class Class Classes Boundaries Tally Frequency Frequency 23 19 19 22 20 18 32 27 21 22 22 19 25 20 26 19 19 20 21 22 26 21 18 27 19 27 20 20 23 39 30 21 19 20 49 20 34 24 30 24 22 17 20 19 19 28 27 19 27 24 21 21 20 19 34 19 20 22 25 22 20 20 19 20 24 24 26 20 26

[object Object],[object Object]

Example: BUN Count ,[object Object],17 18 13 14 12 17 11 20 13 18 19 17 14 16 17 12 16 15 19 22

Reasons For Constructing a Frequency Distribution ,[object Object],[object Object],[object Object],[object Object],[object Object]

2.3 Histograms, Frequency Polygons, and Ogives ,[object Object],[object Object],[object Object],[object Object]

Frequency Polygon ,[object Object]

Ogive ,[object Object],[object Object],[object Object],[object Object]

Relative Frequency ,[object Object],[object Object],[object Object],[object Object]

Relative Frequency ,[object Object],[object Object]

2.4 Other Types of Graphs ,[object Object]

Time Series Graph ,[object Object]

Example: Time Series Graph ,[object Object],Year 1994 1995 1996 1997 1998 1999 2000 No. of Departures 7.5 8.1 8.2 8.2 8.3 8.6 9.0

Example: Pie Graph ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Stem-and-Leaf Plot ,[object Object]

Example: Stem & Leaf Plot ,[object Object],12 23 28 2 31 37 15 23 38 31 16 11 8 17 20 34 8

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