However, upon entering the formula =SUM(A1: A3) into cell A4, we find that Excel believes the sum of the three cells is a small fractional value.
Further, we realize the same result when using =SUBTOTAL(9, A1: A3) in cell A5 and =A1 A2 A3 in cell A6, as shown in Figure 2.
With calculation options set to automatic (Microsoft Office Button , Excel Options, Formulas category or Formulas tab, Calculation group, Calculation Options button), changes that you make to the worksheet data automatically appear in the chart.
If you create a chart based on a cell range, updates to data within the original range are reflected in the chart.
To check the setting, click the Formulas tab on the Excel Ribbon, and click the Calculate Options drop down.
Or, go to the Excel Options window, and click Formulas.
That setting affects all the other workbooks the you open during that session.
According to Microsoft, the source of these types of errors is the Institute of Electrical and Electronics Engineers (IEEE) 754 floating-point standard requiring that numbers be stored in a binary format.You can instantly update a chart with changed values, or you can dynamically change the underlying source data.You can also update a chart by adding, changing, or removing data.For example, I have a formula =sum(D2: D7) in cell D8, now, when I insert a row at the second row and enter new number, the formula will be changed to =sum(D3: D8) automatically which excludes the cell D2 as following screenshot shown.In this case, I need to change the cell reference in the formula each time when I insert rows.After you create a chart, you might have to change its source data on the worksheet.To incorporate these changes in the chart, Microsoft Office Excel provides various ways to update a chart.How could I always sum the numbers start from cell D2 when inserting rows in Excel?Update formula when inserting rows automatically with formula is the first cell in the list that you want to sum) at the end of the cells that you want to sum the number list, and press Enter key.2.Consider the set of data in cells A1 through A3 of Figure 1.A casual inspection of the data – with perhaps the help of a calculator – reveals that the expected sum of the data is zero.