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Q: What do you mean by measures of central tendency and dispersion?

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One of the measures of central tendency IS the average, also known as mean. You can't calculate the average from other measures of central tendency.

Measures of central tendency are the mean, median, range, mode ect.

The three common measures of central tendency are 1)Mean 2)Median & 3)Mode.Other rare measures are trimean and trimmed meanMode,Median,Range,and Mean

# Mean # Median # Mode

Mean median and mode

The mean of 9 is 9. The median of 9 is 9. The mode of 9 is 9. These are the commonest measures of central tendency.

Mean, Median and Mode.

they are all measures of central tendency.

The mean and median are two measures of central tendency. In introductory statistics many schools include the mode as another example of central tendency but the mode could well be at the end of a distribution.

They are statistical measures of the central tendency of a variable.

The commonest three are the mode, median and mean.

The three commonly used measures of central tendency are the mean, the median, and the mode. They are different ways of describing a "typical" member of the population.

Accuracy depends on what you are trying to measure.As a measure of central tendency, the range is totally useless because it is not a measure of central tendency. As a measure of spread (dispersion), it is the most accurate because it is the only one that measures spread: the other threee are totally useless.With nominal data, the median and mean are not defined and so cannot be accurate.And so on.Accuracy depends on what you are trying to measure.As a measure of central tendency, the range is totally useless because it is not a measure of central tendency. As a measure of spread (dispersion), it is the most accurate because it is the only one that measures spread: the other threee are totally useless.With nominal data, the median and mean are not defined and so cannot be accurate.And so on.Accuracy depends on what you are trying to measure.As a measure of central tendency, the range is totally useless because it is not a measure of central tendency. As a measure of spread (dispersion), it is the most accurate because it is the only one that measures spread: the other threee are totally useless.With nominal data, the median and mean are not defined and so cannot be accurate.And so on.Accuracy depends on what you are trying to measure.As a measure of central tendency, the range is totally useless because it is not a measure of central tendency. As a measure of spread (dispersion), it is the most accurate because it is the only one that measures spread: the other threee are totally useless.With nominal data, the median and mean are not defined and so cannot be accurate.And so on.

Both are measures of central tendency. But, the mean has mathematical properties that are better understood.

they measure the same

They are the mean, median and mode.

mean

The arithmetic mean, geometric mean and the harmonic mean are three example of averages.

An example of using measures of central tendency is in using mean; an example is using rating system to score a person. Also in median, which is used in subjects such as economics.

ANS: Measures of central tendency will quantify the middle of the distribution. The measures in case of population are the parameters and in case of sample, the measures are statistics that are estimates of population parameters. The three most common ways of measuring the centre of distribution is the mean, mode and median.In case of population, the measures of dispersion are used to quantify the spread of the distribution. Range, interquartile range, mean absolute deviation and standard deviation are four measures to calculate the dispersion.The measures of central tendency and measures of dispersion summarise mass data in terms of its two important features.i. With respect to nature of data to cluster around a central valueii. With respect to their spread from their central valueArithmetic mean is defined as the sum of all values divided by number of values.Median of a set of values is the middle most value when the values are arranged in the ascending order of magnitude.Mode is the value which has the highest frequencyThe measures of variations are:i. Range (R)ii. Quartile Deviations ( Q.D)iii. Mean Deviations (M.D)iv. Standard Deviations (S.D)Coefficient of variation is a relative measure expressed in percentage and is defined as:CV in %=

The measures of central tendency are mean, median, and mode. The merits of mean are that it is easily calculated and easy to understands. Demerits are that it may be theoretical and cannot be used for qualitative date.

Of these three, the median is most resistant.

They are all the same.

The four measures of central tendency are mean-also called average, mode-the most frequently occurring numerical, median-the middle number after arranging all data from lowest to highest numerical and lastly standard deviation-root-mean-square or square-root of the variance. These are the 4 measure of central tendency.

In typical statistical distributions, these are measures that tend to lie close to the centre of the distribution.