Welchs ANOVA Test example

	A	B
1	group	value
2	New	50
3	New	39
4	New	42
5	New	45
6	New	38
7	New	44
8	New	40
9	New	49
10	New	42
11	New	41
12	Old	44
13	Old	31
14	Old	50
15	Old	22
16	Old	30
17	Old	27
18	Old	32
19	Old	25
20	Old	40
21	Control	16
22	Control	60
23	Control	24
24	Control	19
25	Control	31
26	Control	37
27	Control	44
28	Control	55
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