=confidence.t #SPILL! error

Question

I keep getting a #SPILL! error and cannot correct it. I am following the instructions from my homework assignment

Answer 1

Hi @Manuel, Jackson Arnold,

The #SPILL! error in Excel usually means the formula is trying to return multiple results, but Excel cannot place them into the cells it needs. This often happens with formulas like FILTER, SORT, UNIQUE, or SEQUENCE.

Please try these checks:

1. Click the cell showing #SPILL! Excel will usually highlight the area where the results are supposed to appear.
2. Check for anything blocking the spill range

Make sure the cells around the formula are completely empty. Even one hidden value, space, or formula can block the result. Microsoft also notes you can use “Select Obstructing Cells” from the error warning if available.

3. Check for merged cells

If the result area contains merged cells, Excel will return #SPILL!. Unmerge those cells and test again.

4. Check whether the formula is inside an Excel Table

Some spilled array formulas do not work properly inside a Table. If your homework formula is inside a formatted table, try moving it outside the table or converting the table to a normal range.

5. Check if the formula is referencing an entire column

Example: =VLOOKUP(A:A,A:C,2,FALSE)

This can sometimes cause #SPILL! because Excel tries to return too many results. Instead, use a smaller range like: =VLOOKUP(A2:A20,A:C,2,FALSE) or use a single-cell reference and copy it down.

Official Microsoft guide: How to correct a #SPILL! error

Hope this will help.

Answer 2

#SPILL! appears when Excel cannot place all the results of a formula into the grid. For a formula like =CONFIDENCE.T(...), the most common causes are:

1. Spill range is not blank
   1. Select the cell that shows #SPILL!.
   2. A dashed border will appear around the intended spill range.
   3. Click the error icon that appears next to the cell and choose Select Obstructing Cells.
   4. Clear or move any values, formulas, tables, or PivotTables in those obstructing cells.
   5. Once the obstruction is removed, the formula will spill correctly.
2. Spill extends beyond the worksheet edge If the formula would return more rows/columns than fit on the sheet (for example, because one of the arguments is a full-column reference like A:A), Excel returns #SPILL!. To fix this:
   • Avoid using full-column references in dynamic array formulas.
   • Reduce the size of the range arguments so the result fits on the sheet, or
   • Move the formula cell so that there is enough space for the spill range.
3. Indeterminate spill size If any argument to the formula uses volatile functions that cause the result size to change between recalculations (for example, SEQUENCE(RANDBETWEEN(1,1000))), Excel may not be able to determine a stable spill size and will show #SPILL!. To fix this:
   • Remove or replace volatile functions that change the size of the result, or
   • Use fixed sizes (constants or non-volatile references) so the spill size is stable.

If none of these apply, check that the formula is written exactly as required in the homework instructions and that all required arguments are present, since an unrecognized/fallback #SPILL! can occur when the formula is not valid for the given arguments.

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References:

• How to correct a #SPILL! error
• #SPILL! error - Extends beyond the worksheet's edge
• #SPILL! error - Unrecognized/Fallback