Table:
0
A
B
C
D
E
F
1
people id
sex
name
date of birth
height
weight
2
1
M
Hubert Henno
06.10.1976
188
83
3
2
M
Dominique Daquin
10.11.1972
197
85
4
3
F
Stéphane Antiga
03.02.1976
200
94
5
4
M
Laurent Capet
05.05.1972
202
92
6
5
F
Frantz Granvorka
10.03.1976
195
90
7
6
M
Vincent Montméat
01.09.1977
196
88
8
7
M
Loïc De Kergret
20.08.1970
193
89
9
8
M
Philippe Barça-Cysique
22.04.1977
194
88
10
9
M
Guillaume Samica
28.09.1981
196
82

Questions and formulas:
Question: What are the names of all people, ordered by their date of birth?
Formula: SORTBY(C1,D1,1)
Formula2: SORTBY(C2:C10,D2:D10,1)
Level: easy
Question: Find the average height and weight for all males (sex is M).
Formula: CHOOSE({1,2},AVERAGE(FILTER(E1,B1="M")),AVERAGE(FILTER(F1,B1="M")))
Formula2: CHOOSE({1,2},AVERAGE(FILTER(E2:E10,B2:B10="M")),AVERAGE(FILTER(F2:F10,B2:B10="M")))
Level: hard
Question: What are the average height and weight across males (sex is M)?
Formula: CHOOSE({1,2},AVERAGE(FILTER(E1,B1="M")),AVERAGE(FILTER(F1,B1="M")))
Formula2: CHOOSE({1,2},AVERAGE(FILTER(E2:E10,B2:B10="M")),AVERAGE(FILTER(F2:F10,B2:B10="M")))
Level: hard
Question: Count the number of people of each sex who have a weight higher than 85.
Formula: LET(query1,SUMMARIZE(B1,SUMX(A1),SUMX(F1)),FILTER(query1,CHOOSECOLS(query1,3)>85))
Formula2: LET(query1,SUMMARIZE(B2:B10,SUMX(A2:A10),SUMX(F2:F10)),FILTER(query1,CHOOSECOLS(query1,3)>85))
Level: hard
Question: List all info about all people.
Formula: A1
Formula2: A2:A10
Level: easy
Question: What is all the information about all people?
Formula: A1
Formula2: A2:A10
Level: easy
Question: Show all people IDs
Formula: UNIQUE(A1)
Formula2: UNIQUE(A2:A10)
Level: easy
Question: What information is there on people?
Formula: UNIQUE(A1)
Formula2: UNIQUE(A2:A10)
Level: easy
Question: the names, ids and birthdays of people from young to old.
Formula: SORT(UNIQUE(HSTACK(C1,A1,D1)), 3, 1)
Formula2: SORT(UNIQUE(HSTACK(C2:C10,A2:A10,D2:D10)), 3, 1)
Level: medium
Question: men's mean height and weight respectively
Formula: HSTACK(AVERAGE(FILTER(E1, B1="m")),AVERAGE(FILTER(F1, B1="m")))
Formula2: HSTACK(AVERAGE(FILTER(E2:E10, B2:B10="m")),AVERAGE(FILTER(F2:F10, B2:B10="m")))
Level: hard
Question: average male height and weight respectively 
Formula: HSTACK(AVERAGE(FILTER(E1, B1="m")),AVERAGE(FILTER(F1, B1="m")))
Formula2: HSTACK(AVERAGE(FILTER(E2:E10, B2:B10="m")),AVERAGE(FILTER(F2:F10, B2:B10="m")))
Level: hard
Question: number of men and women respectively who weigh more than 85.
Formula: ROWS(FILTER(A1:F1, (F1>85)*((B1="m")+(B1="f"))))
Formula2: ROWS(FILTER(A2:F10, (F2:F10>85)*((B2:B10="m")+(B2:B10="f"))))
Level: easy
Question: Respective number of women and men who weigh over 85.
Formula: ROWS(FILTER(A1:F1, (F1>85)*((B1="m")+(B1="f"))))
Formula2: ROWS(FILTER(A2:F10, (F2:F10>85)*((B2:B10="m")+(B2:B10="f"))))
Level: easy
Question: the respective mean height and weight of men
Formula: HSTACK(AVERAGE(FILTER(E1, B1="m")),AVERAGE(FILTER(F1, B1="m")))
Formula2: HSTACK(AVERAGE(FILTER(E2:E10, B2:B10="m")),AVERAGE(FILTER(F2:F10, B2:B10="m")))
Level: hard
Question: the respective average height and weight for men.
Formula: HSTACK(AVERAGE(FILTER(E1, B1="m")),AVERAGE(FILTER(F1, B1="m")))
Formula2: HSTACK(AVERAGE(FILTER(E2:E10, B2:B10="m")),AVERAGE(FILTER(F2:F10, B2:B10="m")))
Level: hard
Question: the number of people for each sex who weigh more than 85.
Formula: LET(query1,SUMMARIZE(B1,SUMX(A1),SUMX(F1)),FILTER(query1,CHOOSECOLS(query1,3)>85))
Formula2: LET(query1,SUMMARIZE(B2:B10,SUMX(A2:A10),SUMX(F2:F10)),FILTER(query1,CHOOSECOLS(query1,3)>85))
Level: hard
Question: Number of people for each sex who weigh over 85.
Formula: LET(query1,SUMMARIZE(B1,SUMX(A1),SUMX(F1)),FILTER(query1,CHOOSECOLS(query1,3)>85))
Formula2: LET(query1,SUMMARIZE(B2:B10,SUMX(A2:A10),SUMX(F2:F10)),FILTER(query1,CHOOSECOLS(query1,3)>85))
Level: hard
Question: people ids
Formula: UNIQUE(A1)
Formula2: UNIQUE(A2:A10)
Level: easy
Question: Any people information?
Formula: UNIQUE(A1)
Formula2: UNIQUE(A2:A10)
Level: easy