BUAL 2650 GUPTA FINAL EXAM
QUESTIONS & ANSWERS
predictive analytics - ANSWERwhat will happen
descriptive analytics - ANSWERWhat has happened?
prediction for logistic regression should be - ANSWERcategorical or qualitative
not a common value of alpha - ANSWER.02
seasonal effect - ANSWERone that repeats at fixed intervals of time, typically a year,
month, week, or day
Simple Moving Average - ANSWERa smoothing method based on the idea of averaging
random fluctuations in the time series to identify the underlying direction in which the
time series is changing
which of the following is not an error metrics - ANSWERmean regression deviation
cluster analysis - ANSWERstatistical techniques identify groups of entities that have
similar characteristics
Discriminant Analysis - ANSWERclassifies objects into predefined classes
opportunity loss strategy - ANSWERminimax regret
spam filtering emails is what type of data analysis - ANSWERclassification
agglomerative clustering - ANSWERmethods proceed by series of fusions of the n
objects into groups.
correlation coefficient - ANSWERmeasure of linear relationship between 2 variables, x
and y, which doesn't depend on units of measurement
R squared - ANSWERthe proportion of the total variation in a dependent variable
explained by an independent variable
lurking variable - ANSWERunknown variable that hasnt been accounted for
equations - ANSWERactual-predicted
Multicollinearity - ANSWERindependent variables are highly correlated
p-value > alpha - ANSWERfail to reject
QUESTIONS & ANSWERS
predictive analytics - ANSWERwhat will happen
descriptive analytics - ANSWERWhat has happened?
prediction for logistic regression should be - ANSWERcategorical or qualitative
not a common value of alpha - ANSWER.02
seasonal effect - ANSWERone that repeats at fixed intervals of time, typically a year,
month, week, or day
Simple Moving Average - ANSWERa smoothing method based on the idea of averaging
random fluctuations in the time series to identify the underlying direction in which the
time series is changing
which of the following is not an error metrics - ANSWERmean regression deviation
cluster analysis - ANSWERstatistical techniques identify groups of entities that have
similar characteristics
Discriminant Analysis - ANSWERclassifies objects into predefined classes
opportunity loss strategy - ANSWERminimax regret
spam filtering emails is what type of data analysis - ANSWERclassification
agglomerative clustering - ANSWERmethods proceed by series of fusions of the n
objects into groups.
correlation coefficient - ANSWERmeasure of linear relationship between 2 variables, x
and y, which doesn't depend on units of measurement
R squared - ANSWERthe proportion of the total variation in a dependent variable
explained by an independent variable
lurking variable - ANSWERunknown variable that hasnt been accounted for
equations - ANSWERactual-predicted
Multicollinearity - ANSWERindependent variables are highly correlated
p-value > alpha - ANSWERfail to reject
