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add all the numbers together then divide by how many numbers there are
the mean for this data set is about 3.3933
--- and if you're too lazy to calculate that ...
http://www.easycalculation.com/statistics/standard-deviation.php
add all the numbers together then divide by how many numbers there are
the mean for this data set is about 3.3933
--- and if you're too lazy to calculate that ...
http://www.easycalculation.com/statistics/standard-deviation.php
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Is the mean of the grouped data is equal to the mean of ungrouped data?
Suppose you compare the mean of raw data and the mean of the same raw data grouped into a frequency distribution. These two means will be
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.
Does all data have a mean median or mode?
No, not all data sets have a mode but all data sets have a mean and median.
How can you find the assumed mean of grouped data?
find assumed mean data is 46,55,52,59,63,47,56,50,51,55 ,
Is it true that in large data sets the mean is always one of the data values?
No. Here's one set of data where the mean is not one of the values: a set of 250,000 numbers. 125,000 of them are "1", 125,000 are "3". The mean of this data set is "2", which is not among the data.
