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You describe the shape, not of the data set, but of its density function.
You describe the shape, not of the data set, but of its density function.
You describe the shape, not of the data set, but of its density function.
You describe the shape, not of the data set, but of its density function.
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How can you describe what is typical about the distribution of a set of data?
The answer will depend on the set of data!
When is the mean not a valid statistic to describe a set of data?
The population data may be skewed and thus the mean is not a valid statistic. If mean > median, the data will be skewed to the right. If median > mean, the data is skewed to the left.
What is a set of data collected to answer a statistical question?
It is simply a data set.
How is the choice made between mean and median to describe the typical value related to the shape of the data distribution?
Either can be used for symmetrical distributions. For skewed data, the median may be more a appropriate measure of the central tendency - the "average".
What is the minimum data value in a data set?
The minimum data value in a data set is simply the lowest value of the set (easily found by arranging the set from lowest-highest values in an excel sheet or by hand).
