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when selecting a random sample,the number of members of the population selected to be in the sample is called the size.

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a measure of dispersion, computed by taking the arithmetic mean of the absolute values of the deviations of the functional values from some central value, usually themean or median. Also called average deviation. Origin of mean deviation Expand.

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the mean absolute deviation is the average of the absolute values of the deviation of each data value from the mean

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The range of the data refers to the minimum and maximum values in a data set

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The spread of data describes how "Spread out" the data is. this can also be called the variability of the data.

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The variability of data describes how spread out or clustered the data are in data set

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Line Plot: A graph showing the frequency of data using a number line. A line plot, sometimes called a dot plot, helps us get a better understanding of a small number of observations. ... Each observation is marked as a point above the line.

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Random number tables are tables that display random numbers.these tables can contain hundreds of digits

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A random number table is any computer program or calculator that can generate numbers such that each number has an equal chance of occuring each time

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A random sample is a sample that is selected from the population in such a way that every member of the population has the same chance of being selected

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when data are gathered from a sample, the characteristic used to describe the sample is called a statistic

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when data are gathered from population,the characteristic used to describe the population called a parameter

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when data are collected from a part of the data called a sample

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A census is the collection of data from every member of a population

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the population is the entire set of items from which data can be selected.when you decided what you want to study, the population is the set of all elements of that population can be people or objects

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when information is collected,the facts or numbers gathered are called data

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A survey is one method of collecting information about a certain group of people.it involves asking a question or a set of questions of those people.