Computer Security: Principles and Practice

Computer Security: Principles and Practice Classes of intruders: criminals • Individuals or members of an organized crime group with a goal of financial reward – Identity theft – Theft of financial credentials – Corporate espionage – Data theft – Data Read More …

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MEASURES OF DISPERSION

The measures of central tendencies (i.e. means) indicate the general magnitude of the data and locate only the center of a distribution of measures. They do not establish the degree of variability or the spread out or scatter of the Read More …

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Demerits of Mode

1. It is ill defined. 2. It is not based on all observations. 3. It is not capable of further algebraic treatment. 4. It is not a good representative of the data. 5. Sometimes there are more than one values Read More …

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Merits of Mode

1. It is simple to calculate. 2. In individual or discrete distribution it can be located by mere inspection. 3. It is easy to understand. Everyone is used to the idea of average size of a garment, an average American Read More …

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Merits of Median

1. It is rigidly defined. 2. It is easy to calculate and understand. 3. It is not affected by extreme values like the arithmetic mean. For example, 5 persons have their incomes $2000, $2500, $2600, $3000, $5000. The median would Read More …

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