Author Question: Causal models: a. provide evidence of a causal relationship between an independent variable and the ... (Read 171 times)

magmichele12 · **on:** Jun 24, 2018

Causal models:
a. provide evidence of a causal relationship between an independent variable and the variable to be forecast.
b. use the average of the most recent data values in the time series as the forecast for the next period.
c. occur whenever all the independent variables are previous values of the same time series.
d. relate a time series to other variables that are believed to explain or cause its behavior.

Question 2

When a process that is governed by a Six Sigma approach to quality improvement is found to be in statistical control, the expected number of defects per million products or opportunities is
a. 1.2.
b. 1.5.
c. 2.0.
d. 3.4.
e. 6.0.