> For the complete documentation index, see [llms.txt](https://developer.harness.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.harness.io/feature-management-experimentation/use-fme/experimentation/setup/experiment-hypothesis.md).

# Experiment hypothesis

### Constructing a hypothesis <a href="#constructing-a-hypothesis" id="constructing-a-hypothesis"></a>

A key step in developing and designing an experiment is constructing a hypothesis. To help you structure your hypothesis in a meaningful way, we've provided a framework below with two helpful templates -- a simple one, and an advanced one.

### Hypothesis Framework <a href="#hypothesis-framework" id="hypothesis-framework"></a>

1. Define the **problem**: What is the rationale for experimenting? What do you want to learn? What data do you have to inform your design? *(Problem)*
2. Define the **solution**: What are ways in which you can change the experiences? What strategy will dictate the tactic for the experiment? *(Strategy and Tactic)*
3. Define the measures for **success**: What proves this hypothesis to be true? What is the expected outcome? *(Result)*

#### Simple Hypothesis Template <a href="#simple-hypothesis-template" id="simple-hypothesis-template"></a>

1. Because we observed *motivating data* or *feedback*,
2. We expect that *change* will cause *expected metric impact*.

#### Advanced Hypothesis Template <a href="#advanced-hypothesis-template" id="advanced-hypothesis-template"></a>

1. *(TACTIC)* By introducing *X change*
2. *(STRATEGY)* We can *remove/create/reduce X*
3. *(RESULT)* And *increase/decrease X metric*
4. *(TACTIC)* By/with *X solution and tactic*