Using calculator manually:
Week 2: I cross-checked this by using a calculator: = 27x16.99
= 458.73
Week 3: I cross-checked this by using a calculator: = 64x16.99
= 1087.36
Week 4: I cross-checked this by using a calculator: = 63x16.99
= 1070.37
Profit
Function:
Week 2, 3 and 4: I calculated the profit by entering this formulae in the function bar “=SUM(F2-D2*E2)”,
Using calculator manually:
Week 2: I cross-checked this by using a calculator:
= 27x12.7425
= 344.0475
= 458.73-344.0475
= 114.6825 (I rounded it up to 2 decimal places)
= 114.68
Week 3: I cross-checked this by using a calculator:
= 64x12.7425
= 815.52
= 1087.36-815.52
= 271.84
= 271.84
Week 4: I cross-checked this by using a calculator:
= 63x12.7425
= 802.7775
= 1070.37-802.7775
= 267.5925 (I rounded it up to 2 decimal places)
= 267.59
I then highlighted column “profit” and pressed fill handle, to get the rest of the results. I did this for week 2, 3 and 4.
Total weekly sales
Function:
Week 2,3 and 4: I calculated the total weekly sales by entering this formula in the function bar “=SUM(D5:D24)”,
Using calculator manually:
Week 2: I cross-checked this by using a calculator:
= 27+88+103+79+43+105+77+54+71+76+75+56+113+90+47+90+57+47+52+73
= 1423
Week 3: I cross-checked this by using a calculator:
= 64+61+75+63+28+116+36+55+41+84+36+41+67+73+61+106+51+66+56+94
=1274
Week 4: I cross-checked this by using a calculator:
= 63+133+75+67+70+89+41+18+53+103+44+65+82+71+73+79+48+23+66+92
= 1355
Total weekly income
Function:
Week 2, 3 and 4: I calculated the total weekly income by entering this formula in the function bar “=SUM (F5:F24)”
Using calculator manually:
Week 2: I cross-checked this by using a calculator:
=458.73+1,583.12+1,440.97+1,500.21+429.57+2,623.95+1,770.23+863.46+922.29+1,367.24+374.25+1,231.44+3,162.87+809.10+1,033.53+629.10+569.43+563.53+779.48+1,824.27
=23936.77
Week 3: I cross-checked this by using a calculator:
=1087.36+1097.39+1049.25+1196.37+279.72+2898.84+827.64+879.45+532.59+1511.16+179.64+901.59+1875.33+656.27+1341.39+740.94+509.49+791.34+839.44+2349.06
= 21544.26
Week 4:
=1070.37+2392.67+1049.25+1272.33+699.30+2224.11+942.59+287. 82+688.47+1852.97+219.56+1429.35+2295.18+638.29+1605.27+552.21+479.52+275.77+989.34+2299.08
= 23263.45
Total sales for week 2,3 and 4
Function:
Week 1: I calculated the total week 1 sales, by entering this formula in the function bar “=SUM (A4:A23)”.
Week 2: I calculated the total week 2 sales, by entering this formula in the function bar “=SUM (B4:B23)”
Week 3: I calculated the total week 3 sales, by entering this formula in the function bar “=SUM (C4:C23)”
Week 4: I calculated the total week 4 sales, by entering this formula in the function bar “=SUM (D4:D23)”
Using calculator manually:
Week 1: I cross-checked this by using a calculator:
= 66+91+94+42+65+98+53+21+76+58+60+49+108+45+31+101+49+51+51+46
= 1255
Week 2: I cross-checked this by using a calculator:
= 27+88+103+79+43+105+77+54+71+76+75+56+113+90+47+90+57+47+52+73
= 1423
Week 3: I cross-checked this by using a calculator:
= 64+61+75+63+28+116+36+55+41+84+36+41+67+73+61+106+51+66+56+94
= 1274
Week 4: I cross-checked this by using a calculator:
= 63+133+75+67+70+89+41+18+53+103+44+65+82+71+73+79+48+23+66+92
= 1355
Total weekly sales
Function:
Total: I calculated the total sales, by entering this formula in the function bar
“=SUM (B26:B29)”.
Using calculator manually:
Total: I cross-checked this by using a calculator:
= 1255+1423+1274+1355
= 5307
Chart
Bar chart
I produced my bar chart show the total sales of books for each week
Step 1: I highlighted week 1, 2, 3 and 4 of the total weekly sales
Step 2: I then pressed chart, which opened chart wizard
Step 3: Here I inserted the information to produce the chart
Step 4: So I clicked the type of chart I wanted; bar chart
Step 5: Then clicked columns on the next page.
Step 6: Then I a new page came, and I wrote down the chart title, the x axis title and y axis title.
Step 7: Then I pressed finished
Error checking
I checked my errors by pressing “error checking” and it would automatically check if I had any errors in my formulae’s: I did this for week 2, week 3, week 4 and weekly analysis. The results for all four of these tables, was that there wasn’t any errors in my formulas.