Standard Deviation-Mean Plot
Section	Mean	Standard Deviation	Range
1	7.425	0.434932945023330	1
2	8.15	0.129099444873581	0.300000000000001
3	7.925	0.25	0.6
4	8.175	0.386221007541883	0.8
5	8.575	0.236290781312630	0.5
6	7.95	0.732575365861197	1.6
7	8.7	0.898146239020499	1.9
8	8.425	0.221735578260834	0.5
9	8.35	0.238047614284762	0.5
10	8.475	0.386221007541882	0.799999999999999
11	8.525	0.125830573921179	0.299999999999999
12	8.525	0.170782512765993	0.399999999999999
13	8.1	0.0816496580927723	0.199999999999999
14	7.95	0.0577350269189624	0.0999999999999996
15	7.9	0.141421356237309	0.3
16	7.25	0.208166599946613	0.5
17	7.125	0.15	0.3
18	6.6	0.439696865275764	1
19	7.4	0.621825270205921	1.4
20	7.025	0.47169905660283	1.1
21	7.75	0.33166247903554	0.7

Regression: S.E.(k) = alpha + beta * Mean(k)
alpha	0.576137663647091
beta	-0.0323821500533099
S.D.	0.0864659757174759
T-STAT	-0.374507426587277
p-value	0.712174039065062

Regression: ln S.E.(k) = alpha + beta * ln Mean(k)
alpha	1.95536028150524
beta	-1.60849990631394
S.D.	2.12590295606887
T-STAT	-0.756619629189616
p-value	0.458557786526279
Lambda	2.60849990631394