How to Convert a Mean Score to a Percentage

How to Convert a Mean Score to a Percentage
••• InkkStudios/iStock/GettyImages

Mean scores determine the average performances of students or athletes, amongst other applications. You can convert mean scores to percentages that indicate the average percentage of the score relative to the total score. You can also convert mean scores to percentages to show the performance of a score relative to a specific score. Comparing a mean score to the highest score with a percentage is useful for statistical analysis.

    Find the mean score if not already determined. Add all the scores (​x1, ​x2, ​x3 and so on, the ​xi values) and divide by the total number of scores or "​n​" to find the mean score. The formula is:

    \text{mean} = \frac{\sum_i x_i}{n}

    Determine the score you want to compare the mean score to. You may compare the mean score with the highest possible score, the highest score or a specific score. For example, say you want to compare a mean score of 65 to the highest score of 98.

    Divide the mean score by the score you chose in step 2. Work out

    \frac{65}{98} = 0.6632

    Multiply the decimal you obtain in step 3 by 100 to convert to a percentage. Work out

    0.66 × 100 = 66.32

    Round the percentage to the nearest whole number (66) if you wish. Your mean score as a percentage is 66 percent.


    • Compare individual scores to the mean score by similar means to provide further methods of analysis.

Related Articles

How to Find a Z Score
How to Use a Protractor to Measure a Triangle
Test Your Knowledge on Middle School Science
How to Find Mass in Weight
How to Calculate Volume of a Rectangular Prism
Characteristics of Aquatic Plants
How to Convert Metric Tons to Cubic Meters
How to Approximate the Mean of Group Data
How to Convert Centimeters to Square Feet
How to Convert Centimeters to Meters
How to Calculate Statistical Mean
How to Find Isotopes
How to Calculate CV Values
How to Convert T-Scores to Percentiles
How to Calculate the Grand Mean
How to Calculate Standard Deviation by Hand
How to Calculate the Diameter of a Circle From a Linear...
How to Determine Square Feet Area
How to Find Y Value for the Slope of a Line
Science Project Ideas & the Scientific Method

Dont Go!

We Have More Great Sciencing Articles!