A logic model is a set of measures to realize your Theory of Change. Creating a logic model will allow you to calculate your impact in a systematic and automated manner.
Creating a logic model can feel overwhelming. Remember that with SAMETRICA you can always go back and make updates to your logic model. The important thing is to get into the mindset of thinking about the outcomes of your work. The Logic Model Builder can help.
If you'd like more information on key terms for logic models, check out this help article.
If there are no measures in your logic model, the screen will look like this:
For a refresher on the terminology and theory behind logic models, click here!
For each measure created, a calculation can be added.
1. Hover over the measure you would like to create a calculation for, and options will appear to the right side. Select the calculator icon.
2. In the calculation page, you can perform a few different tasks:
a. Name your calculation by clicking on unnamed calculation (Would recommend naming it the same as your measure)
b. Add a variable by selecting the +Add variable button
c. Add a formula in the Enter formula box and clicking Save Formula. The formula box an take any combination of latex entries.
Additional actions on this page include +Add calculation (which creates a child calculation to your current), Display Snapshots (which shows historical values in prescheduled database saves), and Redo Calculations (which reruns any variables and calculations on screen with the most up to date numbers). |
Adding a variable allows you to connect to a data point in the forms you have access to. By creating the connection, you can draw the values into your calculation, which will automatically update as new data is submitted.
1. Click +Add Variable
2. Select Data Source and Add
3. From the dropdowns at the top of the window: select the source type as Form, select the name of the workspace you are retrieving the data from, and lastly select the form you are retrieving the data from.
4. Data (if available) from your selected form will appear on the bottom half of the window with a preview in a table format. Underneath it will be a toggle between Standard or Array Calculations.
For more information and instructions on how to use Array Calculations, click here.
5. Select the question/data point in the Select Column dropdown menu that you would like to perform a data transformation on. Once a question/data is selected, the dropdown on the right hand side will be clickable. Select a data transformation on the question/data.
The options available for the data transformations will depend on the question type selected. For example, a Multiple Choice question can only have COUNT performed on it, while a Number question can have COUNT, COUNT UNIQUE, SUM, AVERAGE. |
6. A value will appear at the bottom of the window showing what your variable result is. to save your work, select Proceed to review & save.
7. After one more summary page, click Save.
8. Your variable will now appear on the calculation page and have a variable character (e.g. a), and variable name (which can be updated by clicking on it.
9. Repeat steps 1-8 of the process for as many variables as you need.
10. Once ready, input a formula in the Enter formula bar at the bottom of the page and click Save Formula. A f(x) value will appear to the left of the button finalizing the value of your calculation.
Only valid variable characters, mathematical operations and numbers are allowed in the formula bar. |
Congratulations, you have created your very own calculation!