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Range, Width, min-max Values and Graphs

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Presentation on theme: "Range, Width, min-max Values and Graphs"— Presentation transcript:

1 Range, Width, min-max Values and Graphs

2 Let us assume that we have 20 workers and they are installing different number of (let us say cars) weekly. Each worker assemble different numbers. Let us find the min-max numbers, range, width of the distribution. The let us draw the the histogram of the distribution.

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9 The minimum value is 20 cars and the maximum value is 40 cars
Range=highest value – Lowest Value Range is 40-20=20 into interval scale. İn order to find the width we need to classify the observations

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14 Number of Cars Frequency 20-25 4 26-30 5 31-35 2 36-40 9 Total 20

15 Width= Range/The Number of Classes

16 The Percentage and Cumulative
Number of Cars Frequency Percentage Cumulative 20-25 4 20 26-30 5 25 45 31-35 2 10 55 36-40 9 100 Total -- Let us calculate The Weekly Average We need the middle value for each classes (20+25)/2=22,5 (26+30)/2=28 (31+35)/2=33 (36+40)/2=38

17 (22,5x0.2)+(28x0.25)+(33x0.10)+(38x0.45) = 31.9 = 32 Cars
Number of Cars Mid Classes Frequency Percentage Cumulative 20-25 22,5 4 20 26-30 28 5 25 45 31-35 33 2 10 55 36-40 38 9 100 Total -- (22,5x0.2)+(28x0.25)+(33x0.10)+(38x0.45) = 31.9 = 32 Cars

18 Line Graph With One Variable

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25 Line Graphs With two Variables

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31 Bar Graph

32 Bar Graph With One Variable

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39 Bar Graph With Two Variables

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46 Pie Chart

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55 Static Relation Between Two Variables (Scatter Graph)

56 Suppose we have 15 consumers; their monthly income and consumptions are given in the table

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62 Strong estimation Week estimation


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