[PDF] [PDF] Unit-II MEASURES OF CENTRAL TENDENCY AND DISPERSION

[PDF] Measures of Central Tendency and Dispersion - Paris School of

set of data tend to cluster in the central tendency area Example with a set of quiz scores (X): Better measure of central tendency than the mode since it

[PDF] Unit-II MEASURES OF CENTRAL TENDENCY AND DISPERSION

Grouped Data (Classified Data): When a frequency distribution is obtained by dividing an ungrouped data in a number of strata according to the value of variate  

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The range, variance, and standard deviation are measures of dispersion that describe the spread of data Measures of Central Tendency: Mode, Median, Mean

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A measure of central tendency is a number used to represent the center or gives the quiz scores for a student on quizzes consisting of 10 questions each

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Chapter 8 Describing Data: Measures of Central Tendency and Dispersion In the previous chapter we discussed measurement and the various levels at which  

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2 Measures of Central Tendency • a measure that tells us where the middle of a bunch of data lies • most common are Mean, Median, and Mode Mean

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1 1 Measures of Central Tendency 1 1 Mean, Median, Mode and Range A school has to select one student to take part in a General Knowledge Quiz

[PDF] 31 Measures of Central Tendency: Mode, Median, and - Cengage

answer the following questions (a) Does a What are commonly used measures of central tendency? (See Problem 9 in the Chapter Review Problems ) 76 dispersion of a set of data about the mean will be small if the standard deviation

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Section A 2 ▻ Measures of Central Tendency and Dispersion A5 Mean, Median , and Mode In many real-life situations, it is helpful to describe data by a single 

Central Tendency and Dispersion

Without looking back, can you answer the following questions: • What is the difference between central tendency and dispersion? • What are three measures of 

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Unit-II MEASURES OF CENTRAL TENDENCY AND DISPERSION Ungrouped Data (Raw Data): The information collected systematically regarding a population or a sample survey is called an ungrouped data. It is also called raw data. Grouped Data (Classified Data): When a frequency distribution is obtained by dividing an ungrouped data in a number of strata according to the value of variate under study, such information is called grouped data or classified data.

Measures of central tendency:

There are several measures of central tendency. Out of these, the following 3 are used more often

1. Mean, 2. Median and 3. Mode

Ungrouped Data

Mean or arithmetic mean of ungrouped data:

Let ݔ1,ݔ2,ݔ3,...,ݔ݊ be ݊ observations then mean is obtained by dividing the sum of ݊

observations by ݊. It is denoted by

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