All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks 10 to each of the students. Which of the following statistical measures will not change even after the grace marks were given?

# All the students of a class performed poorly in Mathematics. The teacher decided to give grace marks $10$ to each of the students. Which of the following statistical measures will not change even after the grace marks were given?

1. A

Mean

2. B

Median

3. C

Mode

4. D

Variance

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