If a time series plot exhibits a horizontal pattern, then:
a. it is evident that the time series is stationary.
b. the data fluctuates randomly around a variable mean.
c. there is no relationship between time and the time series variable.
d. there is no sufficient evidence to conclude that the time series is stationary.
Question 2
True or False If a point is more than 3 sigmas away from the centerline, or if two out of three consecutive points are on the same side of the centerline and more than 2 sigmas away from it, the process is deemed to be in control.
Indicate whether the statement is true or false
Although average brain size increases gradually though time in H. erectus, individuals with small br
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