Average Rating Formula:
From: | To: |
The Average Rating Calculator converts a set of ratings from any scale to a standardized 10-point scale. This allows for easy comparison of ratings from different sources that may use different rating scales.
The calculator uses the following equation:
Where:
Explanation: The equation first calculates the average in the original scale, then converts it to a 10-point scale by multiplying by the ratio of 10 to the maximum rating.
Details: Standardizing ratings to a 10-point scale is crucial for comparing products, services, or reviews that use different rating systems. It provides a common ground for evaluation.
Tips: Enter ratings as comma-separated values (e.g., "8,7,9,10"). Specify the maximum rating of the original scale (e.g., 5 for 5-star ratings, 100 for percentage ratings).
Q1: Why convert ratings to a 10-point scale?
A: The 10-point scale is widely understood and allows for more granular comparison than common systems like 5-star ratings.
Q2: Can I use this for any rating system?
A: Yes, as long as you know the maximum value of the original rating system (e.g., 5 for star ratings, 100 for percentages).
Q3: What if my ratings include decimals?
A: The calculator handles decimal ratings (e.g., 4.5 stars) automatically.
Q4: How accurate is the conversion?
A: The conversion is mathematically precise, maintaining the proportional relationship of the original ratings.
Q5: Can I compare ratings from different sources?
A: Yes, after converting all ratings to the 10-point scale, you can make direct comparisons between different rating systems.