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logicandtruth
New member
 Dec 14, 2016
 11
Hi all  I wonder if you can help please.
Watching a video on youtube to help me understand about the mean, variance and standard deviation but last part of video left me confused.
The speaker said the following for the formula for standard deviation:
Consider if the variance is 200 for the first example and 2 for the second, please could someone explain in detailed simple terms why he calculated it to be 10 square roots of 2 and not 14. 14
Link to video
Watching a video on youtube to help me understand about the mean, variance and standard deviation but last part of video left me confused.
The speaker said the following for the formula for standard deviation:
Consider if the variance is 200 for the first example and 2 for the second, please could someone explain in detailed simple terms why he calculated it to be 10 square roots of 2 and not 14. 14
Link to video
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