Setting up Bell-curve fitting in Calibration
- On the left sidebar of your dashboard, click on the "Reviews" icon.
- Open the "Review Cycle" you want to work on.
- Please refer to this link for guidance on configuring the "Edit Columns" option and setting up the 9-Box:
https://help.peoplebox.ai/hc/peoplebox-help-center/articles/1728390031-setting-up-9box
- Enable the "Show Analytics" toggle.
- Note: You can visualize the score distribution using different chart types, either as a Bar Chart or Line Chart.
The dropdown allows you to select a specific question to visualize its score distribution across reviewees.
- Step Size: The step size sets the score range shown on the X-axis. Here, it’s 0.5, meaning each bar covers a range
of 0.5 points (like 1.0–1.5, 1.6–2.0).
X-axis: The X-axis displays the score ranges for reviewees, grouped according to the step size. For example, it
shows ranges like 1.0–1.5, 2.6–3.0, and so on, indicating how many reviewees fall into each score category.
Y-axis: The Y-axis shows the number of reviewees who fall into each score range. The taller the bar, the more
reviewees received scores within that range. For instance, 6 reviewees scored between 2.6 and 3.0.
- While the Median Score provides insight into the central tendency of the scores, the Average Score captures the
overall score distribution. In the mentioned example: The Median Score of 3 indicates that half of the reviewees
scored below this value and half above, reflecting the central tendency of the scores. In contrast, the Average
Score of 2.8 is calculated by adding all scores and dividing by the number of reviewees, representing the overall
mean.
- You can customize the data:
1. Show Manager Score: View scores given by managers, reflecting their feedback and evaluation.
2. Show Calibration Score: View scores adjusted for consistency across different ratings.
3. Show Legends: Display legends to help understand score categories or data.
- There are two options for displaying data on the chart:
1. Show Number: Displays the exact count of reviewees in each score range. Useful for quickly seeing how many people
received a specific score.
2. Show Percentage: Displays the percentage of reviewees in each score range. Helpful for understanding the proportion
of reviewees within each score range, especially with larger groups.
- The "Line Chart" and its configurations are similar to the "Bar Chart".
- You can add a column using the "Edit Column" option. In this case, we're adding "Final Score" as a custom column.
- Select the Custom Column from the dropdown, and in this case, we are choosing "Final Score".
- After selecting the Custom Column, you can view the calibrated scores, which are modified scores adjusted for
calibration purposes.
For instance: The first blue bar shows that 2 reviewees received scores between 1.6 and 2.0 after the calibration
process.
- You can adjust the questions for which you want to view scores. The scores displayed include both the original and
calibrated scores for each question. In some cases, the original score may not be available if the reviewee was not
assessed on that specific question. Additionally, you can view the Median and Average Scores for both the original
and calibrated scores.
Example: Here, In the 3.6–4.0 score range, there are 2 reviewees with original scores (shown by the green bar) and 2
reviewees with calibrated scores (indicated by the blue bar). This suggests that for this group of reviewees, the
calibrated scores remained unchanged from their original scores, reflecting consistency in the evaluation.