I see people from different ages at my work and every month I need to count how many people from each age I've seen that month. How can I do to give the entries to numbers in a single cell and make numbers count them for me?

Question

I see people from different ages at my work and every month I need to count how many people from each age I've seen that month. How can I do to give the entries to numbers in a single cell and make numbers count them for me? The final result would be a spreadsheet telling there were 8 people from 20 to 39 years old, 14 peolple from 40 to 59 and so on...

Answer 1

jpqcampos wrote:
This appears to be an 'input form' using 'Radio Buttons' to select the category. Neither of these features are supported in Numbers '09.
You can input the data on one table and summarize it on a second table, but the input table will continue to hold data for each event.
And by using the Reorganize button, you can hide all but two rows of that table to approximate the appearance and performance of an input form.
Here are the two tables, Data on the left and Summary on the right. Notes below.
The grey-filled columns in both tables are 'working' columns, and may be hidden (as shown in the image below).
Data table:
D1 contains the word "TRUE" (in capital letters). (This row is always shown.)
D2 is empty, or may contain any value except "TRUE" (This row is always hidden under the Reorganize rule.)The rest of Row 2 of this table requires the data shown: a number outside the range to be counted (999), and two checkboxes, both checked.
D3 (and filled down the rest of column D):   =AND(OR(B2,C2),NOT(OR(B3,C3)))
The formula returns TRUE only for the first unused row in the table (ie. the first row for which neither checkbox has been checked)
Summary table:
Column A contains labels for the age ranges to be counted.
Column B contains the same information in the form necessary for the formulas in columns C and D. They need a numeric value, and that value must be the largest acceptable value in the range to be counted.
C2 (and filled right to column D, then both filled down to row 5):
    =COUNTIFS(Data :: $A,"<="&$B,Data :: B,TRUE)-SUM(C$1:C1)
Two changes from the previous example:
COUNTIFS is used to separate the Native and Foreign counts as well as the age range to be counted.
The amount subtracted from each result is the SUM of the earlier results, and includes the text value in the first cell of the column (which is interpreted by SUM as a zero).
See note below regarding my earlier formula.
When the greyed columns are hidden and the checkbox in the Reorganize pane is checked, the two tables will appear as shown below:
Close the reorganize pane, and the 'data entry form' is ready to use.
To use, enter the age first, then check one of the boxes.
As soon as one box is checked, the row will be hidden, and the next (unused) row will be shown.
Regards,
Barry
Note regarding formula in my earlier post:
The earlier formula will give erroneous results as it subtracts only the count directly above it from its count of persons in the age range 0-n.
In E2 of that table, replace "-E1" with "-SUM(E1:E$1)
Fill down to E8.
Ignore the instructions (in that post) following "Fill down to E8."
B