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Q: What is the relation between mean deviation and quartile deviation?
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Relation between quartile deviation and mean deviation?

mean deviation =(4/5)quartile deviation

What is mean deviation and why is quartile deviation better than mean deviation?

What is mean deviation and why is quartile deviation better than mean deviation?

Is the ratio of quartile deviation to mean deviation is raw?


If quartile deviation is 24. find mean deviation and standard deviation?

Information is not sufficient to find mean deviation and standard deviation.

Relation between mean and standard deviation?

Standard deviation is the variance from the mean of the data.

Why we calculate standard deviation and quartile deviation?

we calculate standard deviation to find the avg of the difference of all values from mean.,

What is numerical measures of dispersion?

There are many:Range,Inter-quartile range,Percentile rangesMean absolute deviation from the mean or medianVarianceStandard deviationStandardised deviation

What does 2 mean when the means 0?

It is not possible to answer without any information on the spread (range, inter-quartile range, mean absolute deviation, standard deviation or variance).

How do you calculate the third quartile for a mean of 110 and a standard deviation of 15?

If this is the only information you have, the answer would be somewhere around 125. Usually, you would find the third quartile by first finding the median. Then find the median of all of the numbers between the median and the largest number, which is the third quartile.

When comparing data between two different groupswhat do you do?

You make comparisons between their mean or median, their spread - as measured bu the inter-quartile range or standard deviation, their skewness, the underlying distributions.

Which measure of variation is appropriate when using the mean and which is appropriate when using the median?

When using the mean: the variance or standard deviation. When using the median: the range or inter-quartile range.

What is a Measure of spread about the mean?

Standard error, standard deviation, variance, range, inter-quartile range as well as measures based on other percentiles.