Table:
0
A
B
C
D
1
shop id
device id
quantity
stock
2
1
6
100
3
2
6
110
4
3
6
134
5
4
6
56
6
1
4
200
7
11
6
112
8
3
4
124
9
9
4
51

Questions and formulas:
Question: What is the average quantity of stocks?
Formula: SUMMARIZE(D1,AVERAGEX(C1))
Formula2: SUMMARIZE(D2:D9,AVERAGEX(C2:C9))
Level: easy
Question: Give the average quantity of stocks.
Formula: SUMMARIZE(D1,AVERAGEX(C1))
Formula2: SUMMARIZE(D2:D9,AVERAGEX(C2:C9))
Level: easy
Question: mean stock quantity 
Formula: SUMMARIZE(D1,AVERAGEX(C1))
Formula2: SUMMARIZE(D2:D9,AVERAGEX(C2:C9))
Level: easy
Question: What is the average stock quantity?
Formula: SUMMARIZE(D1,AVERAGEX(C1))
Formula2: SUMMARIZE(D2:D9,AVERAGEX(C2:C9))
Level: easy
Question: the mean quantity for stock.
Formula: SUMMARIZE(D1,AVERAGEX(C1))
Formula2: SUMMARIZE(D2:D9,AVERAGEX(C2:C9))
Level: easy
Question: What is the average quantity of stock?
Formula: SUMMARIZE(D1,AVERAGEX(C1))
Formula2: SUMMARIZE(D2:D9,AVERAGEX(C2:C9))
Level: easy