Square root curve calculator helps you to adjust raw scores or grades using the square root function to create a more equitable distribution of grades.
The square root curve is a method of adjusting grades by applying the square root function to the raw scores. This technique is often used to curve grades upward, resulting in a more forgiving distribution of scores.
Square Root Curve Grade Formula:
Here is the basic formula:
\begin{align*} SRG &= \sqrt{G} \cdot 10 \end{align*}
Where,
- SRG – The square root curved grade
- G – The student’s raw grade
How to Calculate Square Root Curve Grade?
When it comes to making a quick and accurate calculation, the square root curve calculator is the most convenient option. However, if you prefer to perform the calculation manually, follow the provided example.
Example:
Suppose, if a student receives a score of 72 (G) on a test. What is the student's square root curved grade?
Solution:
Using the formula:
\begin{align*} SRG &= \sqrt{G} \cdot 10 \end{align*}
Step 1: Calculate the square root.
√(72) = 8.4852
Step 2: Multiply it by 10.
8.4852 × 10 = 84.852
Step 3: Round the curved grade to the nearest whole number.
84.852 ≈ 85
Therefore, the student's square root curved grade is 85%.
Square Root Curve Chart:
Have a look at this chart which displays the visual representation of how the square root function transforms raw scores into curved grades:
| Raw Score | Square Root | Curved Score |
|---|---|---|
| 0 | 0 | 0 |
| 1 | 1 | 10 |
| 4 | 2 | 20 |
| 9 | 3 | 30 |
| 16 | 4 | 40 |
| 25 | 5 | 50 |
| 36 | 6 | 60 |
| 49 | 7 | 70 |
| 64 | 8 | 80 |
| 81 | 9 | 90 |
| 100 | 10 | 100 |
FAQs:
How do I Calculate a Test As 20% of a Grade?
Calculating a test as 20% of a grade involves the following steps, such as:
- Identify Weight: Determine the test's weight in the overall grade (20% in this case)
- Calculate Weighted Value: Multiply your test score by 0.20 (representing 20% in decimal form) to find its weighted value
- Add to Overall Grade: Combine the weighted test score with other graded components to compute your final grade
You can also consider the grade curve calculator for instant results.
When Should a Square Root Curve Be Used?
A square root curve should be used when there is a clear need to adjust grades upward in order to provide a more forgiving assessment for students. This could be helpful for students who are struggling in a particular subject or have faced unexpected challenges.
However, the square root curve should only be used as a standard practice for some assessments, as it can hide true student abilities.
References:
Sciencing.com: Calculating the Grade, Square root curve
Quadratic Formula Calculator 
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