View Full Version : Course 4 - Do we need to be able to do ARCSIN?
09-10-2002, 10:56 AM
I just got to the part of survival analysis where you use ARCSIN. Do we have to have a calculator that can do ARCSIN? Or can they only test us by giving us a table? I curently only use the BA-35 Solar.
09-10-2002, 12:22 PM
I don't know if we'll need to do arcsines, but you might consider picking up a TI-30X II anyway. Besides the trig functions and their inverses, it also has some stat functions. There are worse ways to spend $20 or so.
09-10-2002, 02:53 PM
At least know the arcsine formulas. They can test us on that by providing the value of arcsin(sqrt(S-hat(t)). I also recommend getting a TI 30X II - it is much more useful for Course 4 than the BA-35.
Course 5 Zoombie
09-11-2002, 12:33 AM
yes, you are right. remember the formula and waiting the chance to pluck in figures :wink:
09-11-2002, 08:57 AM
I am just glad to see arcsin appear in the title of a thread. Gives me hope that course 4 will be more interesting than Course 2, most of which won't even be tested anymore starting in 2005.
09-11-2002, 10:26 AM
Sorry, retaker. IMHO, Course 2 was much more interesting than Course 4. I actually use Course 2 concepts frequently in work and in life. Course 4 is a bunch of formula memorization - it's dumb because if you ever needed the formula in real life, you would look it up and document it anyway. Some of the concepts are okay.
09-12-2002, 10:28 AM
Don't worry about buying a new calculator. In the rare event they ask the ArcSin confidence intervals/bands equations, they will tell you what the specific ArcSin values are. Personally, I ignored the equations too.
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