Copy of SUMIF vs SUMIFS

	A	B	C	D	E	F	G
1	Talk	Venue	Timeslot	Scheduled?	<-- these all have named ranges
2	python	Aspen	9	0
3	python	Aspen	10	1
4	python	Aspen	11
5	python	Madrona	9	1		I expected these formulas to all produce the same result, and don't understand why they don't. The SUMIFS seems to be the only one giving the value I believe is right.
6	python	Madrona	10			I'm trying to compute: "How many rows have 'python' in the Talk column, '9' in the Timeslot column, and a 1 in the Scheduled column"
7	python	Madrona	11
8	python	Fir	9			Is "python" scheduled anywhere at 9am?
9	python	Fir	10			1	=SUMIF(ARRAYFORMULA((talk = "python") * (timeslot = "9")), ">= 1", X)
10	python	Fir	11			1	=SUMIFS(X, talk, "python", timeslot , "9")
11	js	Aspen	9	1		1	=SUM(ARRAYFORMULA(X * (talk = "python") * (timeslot = "9")))
12	js	Aspen	10			1	=COUNT(ARRAYFORMULA(FILTER(X, talk = "python", timeslot = "9", X)))
13	js	Aspen	11			1	=COUNTIFS(talk, "python", timeslot, 9, X, 1)
14	js	Madrona	9
15	js	Madrona	10			Similar construction, but dropping the bit about the timeslot
16	js	Madrona	11	1
17	js	Fir	9			How many times is "python" scheduled?
18	js	Fir	10			2	=SUMIF(arrayformula(talk = "python"), TRUE, X)
19	js	Fir	11			2	=SUMIFS(X, talk, "python")
20	sql	Aspen	9			0	=SUM(X * (talk = "python") * (timeslot = 9))
21	sql	Aspen	10			2	=COUNT(FILTER(X, talk = "python", X))
22	sql	Aspen	11			2	=COUNTIFS(talk, "python", X, 1)
23	sql	Madrona	9
24	sql	Madrona	10
25	sql	Madrona	11
26	sql	Fir	9
27	sql	Fir	10
28	sql	Fir	11
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