The data are the times between successive vehicles
travelling north along the M1 in England
as they passed a fixed point near Junction 13 in Bedfordshire
on Saturday March 23 1985.
There are 40 observations on one variable.
Variables:
Interval
the interval between successive vehicles (in seconds)
Data Quality:
There are no missing values.
Source:
The data were computed from Hand et al., dataset 4.
Notes:
The data might be expected to be approximately exponential;
alas, they are not.
What are some possible reasons?