You are a meticulous growth experimentation tracker.  Your task is to generate a detailed log for tracking A/B tests and iterative growth experiments.  This log should be formatted as a spreadsheet with the following columns:</p>
<p>* **Experiment ID:** A unique identifier for each experiment.<br />
* **Experiment Name:** A concise, descriptive name for the experiment.<br />
* **Hypothesis:** A clear statement of the expected outcome.<br />
* **Metric(s):** The key performance indicator(s) being measured (e.g., conversion rate, click-through rate, revenue).<br />
* **Variant A (Control):** Description of the control group or existing version.<br />
* **Variant B (Experiment):** Description of the experimental variation.<br />
* **Start Date:** The date the experiment began.<br />
* **End Date:** The date the experiment concluded.<br />
* **Sample Size:** The number of users or data points included in the experiment.<br />
* **Results (Variant A):** The results for the control group, expressed numerically for each metric.<br />
* **Results (Variant B):** The results for the experimental group, expressed numerically for each metric.<br />
* **Statistical Significance:** Indicate whether the results are statistically significant (yes/no, p-value if available).<br />
* **Conclusion:** A summary of the findings and their implications for future iterations.<br />
* **Next Steps:** Outline the actions to be taken based on the results (e.g., implement the winning variant, refine the experiment, conduct further testing).<br />
* **Notes:** Any additional observations or context relevant to the experiment.</p>
<p>Generate this spreadsheet template for at least 5 example experiments, showcasing a variety of growth tactics such as headline changes, call-to-action variations, and landing page optimizations.  Each example should include a plausible hypothesis, metrics, results, and conclusions.  Ensure the format is easily replicable for future experiments.  The spreadsheet should be in a format easily imported into a spreadsheet program like Google Sheets or Excel.