spikels

90 ms·

1051.
by spikels 14y ago
1) Same students, same teachers and same support in same schools but the assignment of students and teachers to classes was randomized. Consent was obtained from principals, teachers and parents. 2) Randomized experiments can establish caus
1052.
by spikels 14y ago
You are correct that if students were assigned in some biased manner it could invalidate any relationship between teacher quality and subsequent student performance. That is exactly what makes this study interesting. All the students were a
1053.
by spikels 14y ago
What one particular statistic do you want? Take a look at the FULL report. All the statistics behind the graph you criticize are in Table 1 on page 10. The next 40 pages seem to be a pretty competent description of both the strengths and we
1054.
by spikels 14y ago
No worries. Statistics can be very confusing. Part of the reason it is so confusing is all the sloppy usage we come across in the media and on the internet. Everyone wants to use statistics as a tool to bolster their point of view but don't
1055.
by spikels 14y ago
There are quite a few statistics reported in the Gates Foundation publication. Take a look for yourself: http://www.metproject.org/downloads/MET_Validating_Using_Ran...
1056.
by spikels 14y ago
Sorry don't mean to belabor this point but I think "standard distribution" (changed from standard deviation) is still incorrect. "Standard" referers to standardized parameters (i.e. mean, variance) as in "standard normal" which has a mean o
1057.
by spikels 14y ago
Clearly all the overlapping points in the first graph are obscuring most of what's going on. This is a warning flag that the author may be trying color the facts to suit their argument. Not very clear what you are try to say: (1) What "stan
1058.
by spikels 14y ago
Credentials seem to make the most sense when you are just starting out or when you want to start over in a new area because you have little if any experience. More regulated areas simply require a piece of paper. Not that this always seems
1059.
by spikels 14y ago
Seems like have you have done great without that piece of paper. What degree would you like go for? A BS majoring in CS? Or maybe think about learning some of the things you missed out on by not having the time to go to college (mostly non
1060.
by spikels 14y ago
Many of these examples are a stretch: (1) The transistor/monopoly theory make no sense. The US government never granted AT&T a monopoly but broke it up in 1982 when they discovered it was a monopoly. (2) I don't think the residents of N
1061.
by spikels 14y ago
Reminds me of the apparently fake story that large numbers of people simultaneously flushing their toilets during breaks in the Superbowl damaging sewerage systems. I wonder if some kind of evil flash mob could bring down the grid by having
1062.
by spikels 14y ago
While there are advantages to both the Coursera format is asynchronous. This makes it fundamentally better able to accommodate different progress rates. Student can individually adjust course parameters to suit how they best learn. (1) Adju
1063.
by spikels 14y ago
He didn't go far enough. The real challenge would be to approximate Flatland where you are constrained (as much as humanly possible ) to two dimensions. For example the desk in this home would not be allowed as a person could occupy the sam
1064.
Collective amnesia helps at PayPal(sfgate.com)
1 points by spikels 14y ago|0 comments
1065.
by spikels 14y ago
My understanding is that back in the 80s & 90s when he was being considered for the Supreme Court he was repeatedly blocked by Joe Biden then chair or ranking minority member on the Judiciary Committee. Not sure of the exact issue that