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Please use regression to estimate the effectiveness (estimate
the value of y) if the advertisement expenses X=30, also
estimate the advertisement expenses level (estimate the value
of X
1
, X
2
) if the effectiveness is y = 50.
(Quad)
30y
48.69615715
50x
1
31.30538226
50x
2
-167.1096731
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Distribution Calculations
After sample data is entered in either Statistic (SD) or Regression
(REG) mode, you can perform the normal distribution or
probability distribution calculation such as P(t), Q(t) and R(t) in
which t is the variate of the probabilistic experiment.
Random variable
Mean of sample
Standard deviation
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