Table:
0
A
B
C
D
1
submission id
scores
author
college
2
1
72
Steve Niehaus
Notre Dame
3
2
79
Sammy Green
Florida
4
3
78
Sherman Smith
Miami (OH)
5
4
79
Steve Raible
Georgia Tech
6
5
82
Jeff Lloyd
West Texas State
7
6
89
Rick Engles
Tulsa
8
7
92
Don Bitterlich
Temple
9
8
93
Steve Myer
New Mexico
10
9
82
Randy Johnson
Georgia
11
10
83
Andy Bolton
Fisk

Questions and formulas:
Question: How many submissions are there?
Formula: SUM(A1)
Formula2: SUM(A2:A11)
Level: easy
Question: Count the number of submissions.
Formula: SUM(A1)
Formula2: SUM(A2:A11)
Level: easy
Question: List the authors of submissions in ascending order of scores.
Formula: SORTBY(C1,B1,1)
Formula2: SORTBY(C2:C11,B2:B11,1)
Level: easy
Question:  Find the author for each submission and list them in ascending order of score
Formula: SORT(SUMMARIZE(HSTACK(C1,A1),SUMX(B1)), 3, 1)
Formula2: SORT(SUMMARIZE(HSTACK(C2:C11,A2:A11),SUMX(B2:B11)), 3, 1)
Level: hard
Question: What are the authors of submissions and their colleges?
Formula: CHOOSE({1,2},C1,D1)
Formula2: CHOOSE({1,2},C2:C11,D2:D11)
Level: easy
Question: For each submission, show the author and their affiliated college.
Formula: CHOOSE({1,2},C1,D1)
Formula2: CHOOSE({1,2},C2:C11,D2:D11)
Level: easy
Question: Show the names of authors from college "Florida" or "Temple"
Formula: FILTER(C1,(D1="Florida")+(D1="Temple"))
Formula2: FILTER(C2:C11,(D2:D11="Florida")+(D2:D11="Temple"))
Level: easy
Question: Which authors with submissions are from college "Florida" or "Temple"?
Formula: FILTER(C1,(D1="Florida")+(D1="Temple"))
Formula2: FILTER(C2:C11,(D2:D11="Florida")+(D2:D11="Temple"))
Level: easy
Question: What is the average score of submissions?
Formula: AVERAGE(B1)
Formula2: AVERAGE(B2:B11)
Level: easy
Question: Compute the average score of submissions.
Formula: AVERAGE(B1)
Formula2: AVERAGE(B2:B11)
Level: easy
Question: What is the author of the submission with the highest score?
Formula: LET(a,SORTBY(C1,B1,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Formula2: LET(a,SORTBY(C2:C11,B2:B11,-1),FILTER(a,SEQUENCE(ROWS(a))<=1))
Level: hard
Question: Show different colleges along with the number of authors of submission from each college.
Formula: SUMMARIZE(HSTACK(D1,A1),DCOUNTX(C1))
Formula2: SUMMARIZE(HSTACK(D2:D11,A2:A11),DCOUNTX(C2:C11))
Level: medium
Question: For each college, return the college name and the count of authors with submissions from that college.
Formula: SUMMARIZE(HSTACK(D1,A1),DCOUNTX(C1))
Formula2: SUMMARIZE(HSTACK(D2:D11,A2:A11),DCOUNTX(C2:C11))
Level: medium
Question: How many submissions in total?
Formula: SUM(A1)
Formula2: SUM(A2:A11)
Level: easy
Question: How many submissions are there?
Formula: SUM(A1)
Formula2: SUM(A2:A11)
Level: easy
Question: Authors' college along with submission IDs
Formula: UNIQUE(HSTACK(C1,A1,D1))
Formula2: UNIQUE(HSTACK(C2:C11,A2:A11,D2:D11))
Level: easy
Question: The college and submission id of each author
Formula: UNIQUE(HSTACK(A1,C1,D1))
Formula2: UNIQUE(HSTACK(A2:A11,C2:C11,D2:D11))
Level: easy
Question: Authors who studied at florida or temple college 
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:D1,(D1="florida")+(D1="temple")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:D11,(D2:D11="florida")+(D2:D11="temple")),3))
Level: medium
Question: Authors from florida or temple college and corresponding submission ids.
Formula: LET(query1,FILTER(A1:D1,(D1="florida")+(D1="temple")),UNIQUE(CHOOSECOLS(query1,3,1)))
Formula2: LET(query1,FILTER(A2:D11,(D2:D11="florida")+(D2:D11="temple")),UNIQUE(CHOOSECOLS(query1,3,1)))
Level: hard
Question: Average score of submissions
Formula: SUMMARIZE(A1,AVERAGEX(B1))
Formula2: SUMMARIZE(A2:A11,AVERAGEX(B2:B11))
Level: easy
Question: What is the mean score of submissions?
Formula: SUMMARIZE(A1,AVERAGEX(B1))
Formula2: SUMMARIZE(A2:A11,AVERAGEX(B2:B11))
Level: easy
Question: Who wrote the highest scored submission?
Formula: LET(a,HSTACK(C1,A1),b,A1,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(A1,SUMX(B1)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(C2:C11,A2:A11),b,A2:A11,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(A2:A11,SUMX(B2:B11)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard
Question: How many authors and submissions does each college have?
Formula: SUMMARIZE(D1,DCOUNTX(C1),SUMX(A1))
Formula2: SUMMARIZE(D2:D11,DCOUNTX(C2:C11),SUMX(A2:A11))
Level: medium
Question: Number of authors and submissions of each college.
Formula: SUMMARIZE(D1,DCOUNTX(C1),SUMX(A1))
Formula2: SUMMARIZE(D2:D11,DCOUNTX(C2:C11),SUMX(A2:A11))
Level: medium
Question: The authors from florida or temple college with the corresponding submission ids.
Formula: LET(query1,FILTER(A1:D1,(D1="florida")+(D1="temple")),UNIQUE(CHOOSECOLS(query1,3,1)))
Formula2: LET(query1,FILTER(A2:D11,(D2:D11="florida")+(D2:D11="temple")),UNIQUE(CHOOSECOLS(query1,3,1)))
Level: hard
Question: The average score among submissions
Formula: SUMMARIZE(A1,AVERAGEX(B1))
Formula2: SUMMARIZE(A2:A11,AVERAGEX(B2:B11))
Level: easy
Question: The respective number of authors and submissions of each college.
Formula: SUMMARIZE(D1,DCOUNTX(C1),SUMX(A1))
Formula2: SUMMARIZE(D2:D11,DCOUNTX(C2:C11),SUMX(A2:A11))
Level: medium
Question: The count of submissions
Formula: SUM(A1)
Formula2: SUM(A2:A11)
Level: easy
Question: Colleges and submission ids of authors
Formula: UNIQUE(HSTACK(C1,A1,D1))
Formula2: UNIQUE(HSTACK(C2:C11,A2:A11,D2:D11))
Level: easy
Question: The authors who come from college "Florida" or "Temple"
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:D1,(D1="florida")+(D1="temple")),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:D11,(D2:D11="florida")+(D2:D11="temple")),3))
Level: medium
Question: The author of submission whose score is the highest.
Formula: LET(a,HSTACK(C1,A1),b,A1,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(A1,SUMX(B1)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Formula2: LET(a,HSTACK(C2:C11,A2:A11),b,A2:A11,c,CHOOSECOLS(TAKE(SORT(SUMMARIZE(A2:A11,SUMX(B2:B11)), 2, -1), 1),1),UNIQUE(FILTER(a,NOT(ISNA(XLOOKUP(b,c,c))))))
Level: hard