Harashima Senju
Ton up Member
Question 1.6 part (ii) Q&A bank Part 1. I'm struggling to understand how they got the risk functions
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Decision Theory
- Thread starter Harashima Senju
- Start date
I've written out a detailed explanation for decision 1 in the attached document. Take a look at it and see if you can do the same for the other decisions.
Harashima Senju
Ton up Member
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supriyo23
Member
Can anyone provide simplified explanation on statistical games
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supriyo23
Member
Katherine can u provide me the simplied explanation on decision function as well as risk functions with examples
Hi Supriyo23,
I'm afraid a general explanation such as your request would count as personal tuition, which is quite expensive. ActEd can help with specific questions relating to our products. I tend to think our best explanation is in our Course Notes of course. Is there a particular sentence of our explanation there that you don't understand?
I can make a few suggestions that should help you though: Since you're asking for general help on a broad topic, I always recommend that you try a few Q&A Bank questions. This is because the best way to learn is to try to puzzle it our rather than firing off a question on the forum in the hope that someone gives you a ready-made solution. The Q&A Bank and Assignments are ideal for this. You'll be amazed how much clearer things are once you've seen some questions. Give it a go!
Remember also that this forum is a place for students to help each other, rather than a place to request help from tutors. (I'll post on the forum now and then, but generally only if other students can't help.)
I'm afraid a general explanation such as your request would count as personal tuition, which is quite expensive. ActEd can help with specific questions relating to our products. I tend to think our best explanation is in our Course Notes of course. Is there a particular sentence of our explanation there that you don't understand?
I can make a few suggestions that should help you though: Since you're asking for general help on a broad topic, I always recommend that you try a few Q&A Bank questions. This is because the best way to learn is to try to puzzle it our rather than firing off a question on the forum in the hope that someone gives you a ready-made solution. The Q&A Bank and Assignments are ideal for this. You'll be amazed how much clearer things are once you've seen some questions. Give it a go!
Remember also that this forum is a place for students to help each other, rather than a place to request help from tutors. (I'll post on the forum now and then, but generally only if other students can't help.)
S
supriyo23
Member
Catherine can you please tell me why is d2(x)=a1 in statistical games where a1= coin is 2 headed and a2= coin is balanced and statistician wants to decide whether the coin is 2 headed or not?
I'm sorry Supriyo, your question doesn't make much sense. Is this a question in a past exam, or in our course notes perhaps? If you can tell me a page number I'd be more able to help you.
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supriyo23
Member
It is an example in page 14 of decision theory topic of chapter 1 wherein decision function d2(0)=a1 and d2 (1)=a1.why is it so.
A decision function is just a rule that tells you what to do in any given scenario. (Think of it as a computer algorithm if you like, a set of instructions that tells a computer what to do if a given situation occurs.)
In the scenario on pages 14/15, there are 4 decision functions. One of these "instructions" is to always choose a1, regardless of whether x=1 or x=2. We happen to have labelled this d2, but it doesn't matter whether you call it d3 or d4 instead. The important thing is to make sure you can think of all 4 of them.
In the scenario on pages 14/15, there are 4 decision functions. One of these "instructions" is to always choose a1, regardless of whether x=1 or x=2. We happen to have labelled this d2, but it doesn't matter whether you call it d3 or d4 instead. The important thing is to make sure you can think of all 4 of them.