https://www.easycalculation.com/statistics/standard-deviation.php
add up the squares of the difference between each value and the mean
divide it by 7 or 6 depending on if the population sd or just sd is desired
take the square root.
Please show your work to find the mean and standard deviation of the data. Round to the nearest tenth.
20, 16, 18, 14, 9, 20, 16
I know i have to add all them and divide the answer by 7. And that's my mean , But Idk how to get the standard deviation ?
4 answers
http://www.easycalculation.com/statistics/standard-deviation.php
Thank you
16.14