Azimuthal variations of gas-phase oxygen abundance in NGC 2997

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Table 4.

p-Value of two-sample hypothesis test.

Inter-arm regions		D13^a	P04^b	M13^b	D16^b
(S1, S2 + S4)	(S3, S4)	0.007^c	0.211	0.214	0.004^c
(S3, S4)	(S1, S2 + S3)	0.100	0.353	0.353	0.132
(S1, S2 + S4)	(S1, S2 + S3)	0.060	0.308	0.309	0.011^c

Notes. The null hypothesis is that the two distributions have the same mean.

^(a)

Calibration used in the main text.

^(b)

Calibrations presented in the appendix.

^(c)

Considered as statistically significant (p-value < 0.05).

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