Table:
0
A
B
C
D
E
F
G
1
company name
hardware model name
accreditation type
accreditation level
date
chip model
screen mode
2
Sony Mobile Communications
XPERIA T, XPERIA J
Full
joyn Hot Fixes
Approved (awarded 15.11.12)
X5
1
3
LG Electronics
LG-P760
Full
joyn Hot Fixes
Approved (awarded 19.11.12)
X51v
3
4
Nokia Corporation
Lumia 920, Lumia 820, Lumia 620
Full
joyn Hot Fixes
Approved (awarded 05.12.12)
X5
4
5
Samsung Electronics Co Ltd
GT-I9300
Full
joyn
Approved (awarded 23.10.12)
X30 low-end
5
6
HTC Corporation
Z520e
Provisional
joyn
Approved (valid until 14.09.13)
X3i
6
7
Samsung Electronics Co Ltd
GT-I9100
Provisional
joyn
Approved (valid until 06.04.13)
X50 Advanced
1
8
Nokia Corporation
Nokia 700
Provisional
joyn
Approved (valid until 03.05.13)
X5
2
9
Huawei Technologies Co.Ltd.
U8815 Asura
Provisional
joyn
Approved (valid until 03.05.13)
X50 Standard
3

Questions and formulas:
Question: What are the chip model and screen mode of the phone with hardware model name "LG-P760"?
Formula: CHOOSE({1,2},FILTER(F1,B1="LG-P760"),FILTER(G1,B1="LG-P760"))
Formula2: CHOOSE({1,2},FILTER(F2:F9,B2:B9="LG-P760"),FILTER(G2:G9,B2:B9="LG-P760"))
Level: medium
Question: How many phone hardware models are produced by the company named "Nokia Corporation"?
Formula: ROWS(UNIQUE(FILTER(B1, A1="nokia corporation")))
Formula2: ROWS(UNIQUE(FILTER(B2:B9, A2:A9="nokia corporation")))
Level: medium
Question:  Find the name of the company that has the least number of phone models.
Formula: TAKE(SORT(SUMMARIZE(A1,DCOUNTX(F1)), 2, 1), 1)
Formula2: TAKE(SORT(SUMMARIZE(A2:A9,DCOUNTX(F2:F9)), 2, 1), 1)
Level: hard
Question: List the name of the company that produced more than one phone model.
Formula: LET(query1,SUMMARIZE(A1,),FILTER(query1,CHOOSECOLS(query1,2)>1))
Formula2: LET(query1,SUMMARIZE(A2:A9,),FILTER(query1,CHOOSECOLS(query1,2)>1))
Level: hard
Question: Find the number of phones for each accreditation type.
Formula: ROWS(UNIQUE(C1))
Formula2: ROWS(UNIQUE(C2:C9))
Level: easy
Question: How many phones belongs to each accreditation type?
Formula: ROWS(UNIQUE(C1))
Formula2: ROWS(UNIQUE(C2:C9))
Level: easy
Question: number of Nokia hardware models
Formula: ROWS(UNIQUE(FILTER(B1, A1="nokia corporation")))
Formula2: ROWS(UNIQUE(FILTER(B2:B9, A2:A9="nokia corporation")))
Level: medium
Question: Which company manufactured the least amount of chip models?
Formula: TAKE(SORT(SUMMARIZE(A1,DCOUNTX(F1)), 2, 1), 1)
Formula2: TAKE(SORT(SUMMARIZE(A2:A9,DCOUNTX(F2:F9)), 2, 1), 1)
Level: hard
Question: Name of the company which produced more than 1 chip model.
Formula: LET(query1,SUMMARIZE(A1,DCOUNTX(F1)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Formula2: LET(query1,SUMMARIZE(A2:A9,DCOUNTX(F2:F9)),FILTER(query1,CHOOSECOLS(query1,3)>1))
Level: hard
Question: How many accreditation types are there
Formula: ROWS(UNIQUE(C1))
Formula2: ROWS(UNIQUE(C2:C9))
Level: easy
Question: total number of accreditation types
Formula: ROWS(UNIQUE(C1))
Formula2: ROWS(UNIQUE(C2:C9))
Level: easy
Question: Number of hardware models from nokia corporation.
Formula: ROWS(UNIQUE(FILTER(B1, A1="nokia corporation")))
Formula2: ROWS(UNIQUE(FILTER(B2:B9, A2:A9="nokia corporation")))
Level: medium
Question: Company which manufactured least chip models.
Formula: TAKE(SORT(SUMMARIZE(A1,DCOUNTX(F1)), 2, 1), 1)
Formula2: TAKE(SORT(SUMMARIZE(A2:A9,DCOUNTX(F2:F9)), 2, 1), 1)
Level: hard
Question: How many accreditation types?
Formula: ROWS(UNIQUE(C1))
Formula2: ROWS(UNIQUE(C2:C9))
Level: easy
Question: How many types of accreditation?
Formula: ROWS(UNIQUE(C1))
Formula2: ROWS(UNIQUE(C2:C9))
Level: easy