Tagged Questions
0
votes
1answer
44 views
Confusion regarding weighted average
This is a pretty simple question and I'm wondering how to go about finding a solution. I have the following data.
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1
vote
2answers
107 views
Always get confused by “probabilities and weighted probabilities” type of questions as cant differentiate between two
Urn 1 contains 5 white balls and 7 black balls. Urn 2 contains 3 whites and 12 black. A fair coin is flipped; if it is Heads, a ball is drawn from Urn 1, and if it is Tails, a ball is drawn from Urn ...
4
votes
1answer
274 views
Negative weights in a moving average?
A number of well known moving averages, such as Spencer's 15 point MA, and Henderson moving averages have negative weights in the averages.
What does this mean in a conceptual sense? What information ...
7
votes
1answer
180 views
Averages of averages (of averages, of averages…)
Consider the following cell biology experiment. We are comparing $T$ different treatments of cultured cells. Each treatment $t$ is replicated in several (microtiter) wells, indexed by the variable ...
