Standard Deviation-Mean Plot
Section	Mean	Standard Deviation	Range
1	15.8	1.27801930084539	2.9
2	15.375	1.42448821218944	3.4
3	16.95	0.6557438524302	1.3
4	17.075	1.70758113521242	3.7
5	16.875	1.58403493227475	3.4
6	17.775	1.18988794990677	2.5
7	17.85	1.17046999107196	2.4
8	17.975	1.29453981527543	3.1
9	18.6	1.65529453572468	4
10	19.35	0.793725393319377	1.8
11	19.025	2.02216880271323	4.5
12	17.525	2.97026934805583	6
13	14.25	0.544671154612273	1.3
14	14.075	1.28937969582276	2.9
15	16.025	0.170782512765993	0.399999999999999
16	16.5	1.68720676464584	3.7
17	17.35	1.56311654502578	3.7
18	18.475	0.85	2

Regression: S.E.(k) = alpha + beta * Mean(k)
alpha	-0.357401294173403
beta	0.0986951384618328
S.D.	0.101103586402409
T-STAT	0.976178412395874
p-value	0.343505433865728

Regression: ln S.E.(k) = alpha + beta * ln Mean(k)
alpha	-4.92961144813542
beta	1.78988549620052
S.D.	1.66787068462858
T-STAT	1.07315603823273
p-value	0.299120672154098
Lambda	-0.78988549620052