A2 Biology - Standard deviation, standard error and error bars

A2 Biology - An explanation of what standard deviation and standard error are and how to calculate them. Also looks at how to use standard error to draw error bars and what they tell us in terms of reliability of data.

[@EricLeePiano]

Very good explanation! Thanks.

[@iqrayounis9471]

for the data points for the miracle grow table you missed one value which is another 9 ,then n-1 would be 7 as there are 8 values -1. whereas in your table there was only 7 values -1 =6. That's why i got incorrect value but thank you for explaining anyways.

[@haroonsharif8411]

Please upload genetic variation videos if you can

[@hafsanaleem9582]

do we always draw 2SM, when do we draw 1SM ?

[@jarinmaisha3158]

I have a similar question, why not any other number but 2 Sm? And also could you please explain if you found your answer?

[@maleeshaappuhamy8600]

same question

[@Dazzletoad]

This is incredibly lengthy and incredibly boring.