supervised partition
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response/dependent variable is KNOWN
The mean of a standard normal distribution is always equal to ________.
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0
,Which do you use, MAPE, MAD, or MSD?
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Whichever gives you the smallest values
The specific shape of each normal distribution is determined by its ________ and ________
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mean and standard deviation
In a manufacturing process, a random sample of 9 manufactured bolts has a mean
length of 3inches with a variance of .09 and is normally distributed. What is the 90
percent confidence intervalfor the true mean length of the manufactured bolt?
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2.8140 to 3.1860
[x ̄ ± tα/2, n−1(s/n−−√)]= [3±1.86(.3/3)]=[3±.186]=[2.814, 3.186]
A sustained long-term change in the level of the variable that is being forecasted per
unit of time is
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, a trend
mean absolute percent error (MAPE)
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the average absolute percent error
( actual - predicted / actual ) * 100
all over n
For nonnormal populations, as the sample size (n) ________, the distribution of sample
means approaches a(n) ________ distribution
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increases; normal
unsupervised clustering
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no prior info given to direct clustering of samples
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response/dependent variable is KNOWN
The mean of a standard normal distribution is always equal to ________.
Give this one a try later!
0
,Which do you use, MAPE, MAD, or MSD?
Give this one a try later!
Whichever gives you the smallest values
The specific shape of each normal distribution is determined by its ________ and ________
Give this one a try later!
mean and standard deviation
In a manufacturing process, a random sample of 9 manufactured bolts has a mean
length of 3inches with a variance of .09 and is normally distributed. What is the 90
percent confidence intervalfor the true mean length of the manufactured bolt?
Give this one a try later!
2.8140 to 3.1860
[x ̄ ± tα/2, n−1(s/n−−√)]= [3±1.86(.3/3)]=[3±.186]=[2.814, 3.186]
A sustained long-term change in the level of the variable that is being forecasted per
unit of time is
Give this one a try later!
, a trend
mean absolute percent error (MAPE)
Give this one a try later!
the average absolute percent error
( actual - predicted / actual ) * 100
all over n
For nonnormal populations, as the sample size (n) ________, the distribution of sample
means approaches a(n) ________ distribution
Give this one a try later!
increases; normal
unsupervised clustering
Give this one a try later!
no prior info given to direct clustering of samples
