3 ms·
Are you saying this with awareness of claims like this? http://www.medicalnewstoday.com/articles/294966.php http://www.medicalnewstoday.com/articles/294966.php
by SamReidHughes 10y ago
Are you saying this with awareness of claims like this?
http://www.medicalnewstoday.com/articles/294966.php http://www.medicalnewstoday.com/articles/294966.php
- credit_guy 10y agoIs that difference statistically significant? For those who don't have time to click the link, they looked at 53 kids who received GA and 53 who didn't. The average IQ of the first group was 5-6 points below the second. Now the stdev of one IQ is 15, so the stdev of the average of 53 is 15/sqrt(53)=2.06. The stdev of the difference of two such averages is then 2.06*sqrt(2)=2.91. A 5-point difference is then a 1.72 sigma event and a 6-point move a 2.06 sigma event, and the probabilities of more extreme events are 4.3% and 2%. I guess that's statistically significant, but not by much.
- SamReidHughes 10y agoLook, I didn't read the paper, and it's not the only one.