Table:
0
A
B
C
D
E
F
G
H
I
1
roller coaster id
name
park
country id
length
height
speed
opened
status
2
1
Boardwalk Bullet
Kemah Boardwalk
1
3236
96
51
31-Aug-07
Operating
3
2
Dauling Dragon
Happy Valley
1
3914
105
55
2012
Operating
4
3
Hades 360
Mt. Olympus
1
4726
136
70
14-May-05
Operating
5
4
Ravine Flyer II
Waldameer
2
2900
120
57
17-May-08
Operating
6
5
Twister
Gr??na Lund
2
1574
50
37.9
2011
Operating
7
6
The Voyage
Holiday World
3
6442
163
67
6-May-06
Operating

Questions and formulas:
Question: How many roller coasters are there?
Formula: SUM(A1)
Formula2: SUM(A2:A7)
Level: easy
Question: List the names of roller coasters by ascending order of length.
Formula: SORTBY(B1,E1,1)
Formula2: SORTBY(B2:B7,E2:E7,1)
Level: easy
Question: What are the lengths and heights of roller coasters?
Formula: CHOOSE({1,2},E1,F1)
Formula2: CHOOSE({1,2},E2:E7,F2:F7)
Level: easy
Question: What are the speeds of the longest roller coaster?
Formula: LET(a,SORTBY(G1,E1,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Formula2: LET(a,SORTBY(G2:G7,E2:E7,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Level: hard
Question: What is the average speed of roller coasters?
Formula: AVERAGE(G1)
Formula2: AVERAGE(G2:G7)
Level: easy
Question: Show the different statuses and the numbers of roller coasters for each status.
Formula: SUMMARIZE(I1,SUMX(A1))
Formula2: SUMMARIZE(I2:I7,SUMX(A2:A7))
Level: easy
Question: List the status shared by more than two roller coaster.
Formula: LET(query1,SUMMARIZE(I1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,3)>2))
Formula2: LET(query1,SUMMARIZE(I2:I7,SUMX(A2:A7)),FILTER(query1,CHOOSECOLS(query1,3)>2))
Level: hard
Question: Show the park of the roller coaster with the highest speed.
Formula: LET(a,SORTBY(C1,G1,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Formula2: LET(a,SORTBY(C2:C7,G2:G7,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Level: hard
Question: Compare the number of roller coasters for each status.
Formula: SUMMARIZE(I1,SUMX(A1))
Formula2: SUMMARIZE(I2:I7,SUMX(A2:A7))
Level: easy
Question: Statuses which have more than 2 rollercoasters 
Formula: LET(query1,SUMMARIZE(I1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,3)>2))
Formula2: LET(query1,SUMMARIZE(I2:I7,SUMX(A2:A7)),FILTER(query1,CHOOSECOLS(query1,3)>2))
Level: hard
Question: Which park has the fastest roller coaster?
Formula: LET(a,HSTACK(C1,A1),b,A1,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(A1,SUMX(G1)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(C2:C7,A2:A7),b,A2:A7,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(A2:A7,SUMX(G2:G7)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: Total number of roller coasters.
Formula: SUM(A1)
Formula2: SUM(A2:A7)
Level: easy
Question: The number of roller coasters.
Formula: SUM(A1)
Formula2: SUM(A2:A7)
Level: easy
Question: Compare the number of roller coasters under each status.
Formula: SUMMARIZE(I1,SUMX(A1))
Formula2: SUMMARIZE(I2:I7,SUMX(A2:A7))
Level: easy
Question: The status which more than two roller coasters are currently in.
Formula: LET(query1,SUMMARIZE(I1,SUMX(A1)),FILTER(query1,CHOOSECOLS(query1,3)>2))
Formula2: LET(query1,SUMMARIZE(I2:I7,SUMX(A2:A7)),FILTER(query1,CHOOSECOLS(query1,3)>2))
Level: hard