University Management Science Karteikarten am Management Science Session 3, erstellt von Georgia Tan am 22/09/2015.
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Erstellt von Georgia Tan
vor etwa 9 Jahre
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Schließen
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Erstellt von Georgia Tan
vor etwa 9 Jahre
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What is the imaginary DGP spreadsheet?
The fundamental notion behind statistics is that of a _____________
The fundamental property of a process is?
Each repetition of the DGP produces a data record for a ______
What is the difference between Descriptive and Inferential Statistics?
What is a data generating process?
Give an example of a DGP?
What is a random variable?
Name the two types of random variables.
What is the difference between a random variable and a random vector?
The statistical techniques covered in our mgmt sc course require that the DGP of interest is:
What does saying that the DGP of interest = stationary mean?
There are 2 parts to the explanation
What is a non-stationary process
What can one do to make a DGP stationary?
What is the rule of thumb to determine if the DGP is stationary?
When do we consider a DGP fully characterized?
What is the distribution of a DGP?
What is the probability as defined or as measured by the DGP?
What is inferential stats about?
On a spreadsheet, what is a random variable?
What is a random vector?
What is the distribution of the random variable?
The histogram of a discrete random variable is sometimes called_____
What does the () Rand functio do?
What is the law of large numbers?
What fundamental question does the binomial distribution answer?
What’s the chance of n successes in m independent yes/no experiments (aka “trials”) ----> what does independent mean in this case?
What is the excel function for Binomial Distribution?
=binom.dist(n,m,p,F/T)
define each of the letters
=binom.dist(n,m,p,F/T)
What does the formula calculate when you pick False?
=binom.dist(n,m,p,F/T)
What does the formula calculate when you pick True?
How do you find the probability of at least n successes in m trials, using =binom.dist(n,m,p,F/T) ??
What is the difference b/w Poisson and Binomial?
How does the Poisson process relate to the stationarity assumption?
What is the excel function for Poisson?
Excel = poisson.dist(x,m,F/T)
Explain each of the letters
Excel = poisson.dist(x,m,T/F)
What does True mean?
Excel = poisson.dist(x,m,T/F)
What does False mean?
What are the two types of probability questions?
When the average number of events, x, is larger than 30, then what happens to the Poisson distribution ?
If N is the number of trials and P is the success probability of the binomial distribution and both N*P>10 and N*(1-P)>10, then what happens to the normal distribution?
u +- 1sd
u +-2sd
u+-3sd
What does the norm.dist formulas calculate?
=norm.dist (x, mean, stdev, TRUE) - what does this do?
=norm.inv(p, mean, stdev)
what does this do?
What is the link b/w a random vector & the percentile curve?
How do u know if independent variables x and y are truly independent?
