Timer
00:00
Your Answer
A
B
C
D
E
Global Stats
Official Guide
A total of 20 amounts are entered on a spreadsheet that has 5 rows and 4 columns; each of the 20 positions in the spreadsheet contains one amount. The average (arithmetic mean) of the amounts in row (i) is R(i) (1≤(i)≤5). The average of the amounts in column (j) is C(j) (1≤(j)≤4). What is the average of all 20 amounts on the spreadsheet?
1) R1 + R2 + R3 + R4 + R5 = 550
2) C1 + C2 + C3 + C4 = 440
OA D
A total of 20 amounts are entered on a spreadsheet that has 5 rows and 4 columns; each of the 20 positions in the spreadsheet contains one amount. The average (arithmetic mean) of the amounts in row (i) is R(i) (1≤(i)≤5). The average of the amounts in column (j) is C(j) (1≤(j)≤4). What is the average of all 20 amounts on the spreadsheet?
1) R1 + R2 + R3 + R4 + R5 = 550
2) C1 + C2 + C3 + C4 = 440
OA D
