Find the mean and the standard deviation of each data set . Round to the nearest hundredth.
1.) 4, 8, 5, 12, 3, 8, 5 and 2
2.) 102, 98, 103, 86, 101, 110
3.) 8.2, 11.6, 8.7, 10.6, 9.4, 10.1, 9.3

Question

Find the mean and the standard deviation of each data set . Round to the nearest hundredth.
 1.) 4, 8, 5, 12, 3, 8, 5 and 2 
2.) 102, 98, 103, 86, 101, 110 
3.) 8.2, 11.6, 8.7, 10.6, 9.4, 10.1, 9.3

anonymous · Answer

The means are 1.) 41  2.) 600  3.) 67.9

perl · Answer

are you allowed to use a calculator

anonymous · Answer

Whats standard deviation?

anonymous · Answer

yes

perl · Answer

standard deviation is a measure of variability or 'spread'

perl · Answer

how spread out the data is relative to the mean

perl · Answer

$$ \Large st. dev = \sqrt\frac{\sum (x_i - \bar x )^2} {n} $$

anonymous · Answer

Not understanding..

perl · Answer

here is a standard deviation calculator https://www.easycalculation.com/statistics/standard-deviation.php