A tabulation summarizes large amounts of data into a small, easy-to-read table.
Perform a tabulation to group the values in a column based on the values in another
column.
A tabulation is a great place to start when you want to get a feel for what
all those billions of rows of data in your table really mean. Tabulations allow you
to calculate various metrics, such as the sum, average, or highest value of a
particular column, grouping those calculations based on common values in one or more
other columns. For instance, in a table containing weather data, you could calculate
the highest temperature during the year for every unique combination of ZIP Codeā¢and month in the table.
In this tutorial, you
will perform a tabulation on the Sales Item Detail table to
find the total amount of sales for each of three stores in a chain. You will then
perform a separate tabulation to find the total amount of sales and units for each
transaction. Finally, you will export the tabulation to Excel.
To perform a
tabulation:
Open the Sales Item Detail table
(pub.demo.retail.item).
1010data displays the Sales Item Detail
table.
Click Analysis > Tabulation.
1010data displays the Tabulation dialog.
The Tabulation dialog allows you to create a
basic tabulation. By default, columns in the resultant worksheet are named
t0, t1, t2, and so
on. You can give tabulated columns more meaningful names by using a
different view within the Tabulation
dialog.
Click the Show all inputs sequentially () icon.
1010data displays fields for naming and formatting the columns of the
new tabulation.
In the Title field, enter Sales by
Store.
While not required, entering a title is a good way to remind yourself what
information is in a tabulation after it is saved.
Next, choose the column by which you want to group the information. In
other words, how do you want to subtotal the data. When performing a tabulation, a
helpful question to ask yourself is "What values do I want to use to group the
records?" Since you want to find the total amount of sales for each store, you
should group the information by the Store column. Grouping is
a way of pooling all the records for a single entity or value (in this case, a
store) into a single entry in the table.
Group your tabulation by store.
In the first row of the Column drop-down list,
select Store.
This selection groups the tabulation by store. The result of the
calculation for each store will be displayed on a separate row in the
new worksheet.
In the first row of the Sort drop-down list,
select Up.
This selection sorts the new worksheet in ascending order by the
Store column.
Now that the data grouping is set, choose the data you want to
summarize.
Summarize the total sales for each store.
Under the Which columns' data would you like to
summarize? section, complete the following:
Column
Select Sales.
This selection chooses
the column of data you want to act on. In this instance, you
want to calculate the total sales.
Type of Summary
Select Sum.
This selection chooses the
action you want to perform on the selected column. In this case,
you want to summarize the data in the sales
column.
Reference Column
Leave this field blank; it is used for advanced summarization
functions, such as weighted averages and correlations. For more
information, see Types of Summarizations for
Tabulations in the 1010data User's
Guide.
Result Name
Enter sumsales.
This is the column
name. Remember, 1010data column names must begin with an
alphabetic character, may only contain alphanumeric characters
or underscores, and may not contain any spaces or other special
characters.
Result Heading
Enter Sum of`Sales.
This is the column
label. For easier readability, column labels may contain any
combination of uppercase and lowercase letters, numbers, spaces,
and special characters. The backtick ( `
) special character is used to break the column label text line
into multiple lines. In this case, "Sum of" will be on the first
line of the column label and "Sales" will be on the second line.
Display Format
Select Currency: $1,234.56.
Since your
totals will be dollar amounts, this option is selected. When
currency is selected, 1010data adds the dollar sign and uses two
decimal places for each tabulated sales value.
Column Width
Select Default.
Decimal Places
Select Default.
Because you selected
currency above, 1010data will automatically use two decimal
places.
Now that you have selected the data you want to group by and the data you
want to summarize, generate the tabulation.
Click Submit.
1010data displays the results of your tabulation.
Note: In the image above, the column heading (Sum of
Sales) is at the top of the column. If you prefer, you can
change this to show the column name instead. For details, see User Interface Preferences in the
1010data User's Guide.
Notice that there is a row of
data in gray at the top of the worksheet. This row shows the totals for each
column of summarized data. The three fictional stores generated $59.85 in
sales with store 1 generating $23.19, store 2 generating $16.31, and store 3
generating $20.35. While this tabulation might not seem very useful for a
chain of three stores, it becomes much more useful when summarizing chains
with hundreds, or even thousands, of stores.
Now, you will take a look at a slightly more complex example of a
tabulation.
Instead of looking at the total sales per store, you will
determine the sales totals for each transaction in the Sales Item
Detail table. However, you also want to know at which store any
given transaction took place, and also the total number of items in each
transaction. The objective is to have a summary table that shows you the
transaction ID, store, sum of sales, and total units for each
transaction.
Click the Go Back () icon in
the Tables and Worksheets toolbar.
1010data displays the original Sales Item Detail
table.
Just as before, in the Tabulation dialog, give your
tabulation a title and then start by selecting a column to group your data. In this
case, you want to see the total sales figures for each transaction. You also want to
know which store recorded each of the transactions in the table, so you should also
group by store.
In the Title field, enter Sales by
Transaction.
Group your tabulation by transaction and store.
In the first row of the Column drop-down list,
select Transaction ID.
This selection first groups the tabulation by transaction. The result
of the calculation for each transaction will be displayed on a separate
row in the new worksheet.
In the first row of the Sort drop-down list,
select Up.
This selection sorts the new worksheet in ascending order by the
Transaction ID column.
In the second row of the Column drop-down list,
select Store.
This selection divides the tabulated results into subgroups by store.
In this example, the results are first grouped by transaction and then
by store.
Note: In most cases, the order by which you choose to group the data is
important because it can affect the results of the tabulation.
Now that you have grouped your data, first by transaction, then by store,
you can choose the data you want to summarize. In this example, you are still
summarizing sales, so you can make the same exact selection you made in the last
example.
Summarize the total sales for each transaction.
Under the Which columns' data would you like to
summarize? section, from the first group of fields, complete the
following:
Column
Select Sales.
This selection chooses
the column of data you want to act on. In this instance, you
want to calculate the total sales.
Type of Summary
Select Sum.
This selection chooses the
action you want to perform on the selected column. In this case,
you want to summarize the data in the sales
column.
Reference Column
Leave this field blank.
Result Name
Enter sumsales.
Result Heading
Enter Sum of`Sales.
Display Format
Select Currency: $1,234.56.
Column Width
Select Default.
Decimal Places
Select Default.
Summarize the total items in each transaction.
Under the Which columns' data would you like to
summarize? section, from the second group of fields, complete
the following:
Column
Select Units.
This selection is chosen
because you want to determine the number of units.
Type of Summary
Select Sum.
This selection is chosen
because you want to see the total number of units in each
transaction.
Reference Column
Leave this field blank.
Result Name
Enter totunits.
Result Heading
Enter Total Units.
Display Format
Select Default.
Column Width
Select Default.
Decimal Places
Select Default.
Now that you have selected the data you want to group by and the data you
want to summarize, generate the tabulation.
Click Submit.
1010data displays the results of your tabulation.
Notice that in the new summary, the total sales figure in the gray
row at the top of the worksheet remains the same. However, instead of the
total sales by store, 1010data displays the total sales figure for each
transaction and the store at which the transaction took place. In addition,
the tabulation includes the total number of units sold in every transaction
to provide a little more insight into volume. This provides you with an
extra layer of detail or granularity in your results. Yet, the new table is
still much easier to read and understand than the original Sales
Item Detail table.
The final step in this tutorial is to download your results in a Microsoft
Excel workbook file.
Click Download > To Microsoft Excel and select one of the following from the menu:
XLSX
Select this menu item to download the
tabulation in a workbook file for Excel 2007 and newer.
XLS
Select this menu item to download the
tabulation in a workbook file for Excel 2003 and earlier.
1010data saves the tabulation to your computer as
download.xlsor
download.xlsx.
Note: Depending on the browser you are
using, you may be prompted to open or save the file. If you are prompted,
save the file.
When you are finished with this tutorial, close the Sales Item
Detail worksheet.
Once you are comfortable with them, tabulations in 1010data are a very fast and
powerful way to get a sense of what information your data contains and how it can be
leveraged to make decisions. So with that in mind, good luck and keep practicing.