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The lower the standard deviation then the less the spread is (if it is 0 then there is no spread at all). The higher the standard deviation then the more the spread.
So sir
How do we identify the spread is low or high
I mean
If it’s -0.8 is it low ?
And if it’s
+0.7 is it high ?The standard deviation is never negative.
The lowest it can be is zero, in which case there is no spread.
There is no maximum, but the higher it is then the more the spread.
That is not because the standard deviation is negative!
The graph is showing the possible outcomes and they can be higher or lower than the average.
Ok sir
Then
mean is the average value (or the centre value)… coefficient tells us if the individual salaries are distributed ‘closely’ around the centre(mean) or ‘loosely’ around the centre
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