2.42 2 minute period
Arrivals During
SR 361 Vehicle Number Arrival Time Headway 5-Second Interval
(sec) (sec)
1 0.5  
0 2 3.1 2.6 3 0-5
3 4.2 1.1  
4 6.1 1.9   Arrivals
5 8.3 2.2 3 5-10 During >= 5 Expected
6 9.6 1.3   5-second Observed Poisson (Poisson)
7 11.1 1.5   Interval Frequency Probability Frequency (EF-OF)^2/EF Ho = Poisson Distribution
8 12.2 1.1 4 10-15 0 4   0.00     df = k - 2 unknown mean for a=0.05
9 13.5 1.3   1     reference statistic =    
10 14.7 1.2   2     Table 2.14 in book Can NOT Reject Ho
11 15.6 0.9 2 15-20 3     Can Reject Ho
12 17.8 2.2   4    
13 21.7 3.9 2 20-25 5 +          
14 24.8 3.1   k=6 4 0.00 Chi-Square  
15 25.9 1.1 2 25-30 P(y)=e-uuy/y! Test Statistic =
16 29 3.1   1-SumP(y)
17 32.5 3.5 1 30-35
0 35-40
18 43.8 11.3 1 40-45
19 46.9 3.1 1 45-50
20 50.1 3.2  
21 51.2 1.1  
22 52.3 1.1 5 50-55
23 53.4 1.1  
24 54.9 1.5  
0 55-60
25 60.5 5.6 1 60-65
0 65-70
26 71.2 10.7 2 70-75
27 73.8 2.6  
28 79.5 5.7 1 75-80
29 80.1 0.6  
30 82.5 2.4 3 80-85
31 84.3 1.8  
32 85.7 1.4 2 85-90
33 89.2 3.5  
0 90-95
34 96.5 7.3 2 95-100
35 98.3 1.8  
36 102.7 4.4 1 100-105
37 109.1 6.4 1 105-110
38 112.3 3.2 1 110-115
39 117.1 4.8 2 115-120
40 119.6 2.5  
3.05 40