Answer to Question #129610 in Statistics and Probability for Zuga

Question

If the variance for the performance score of students is 12,5 and the is 32,5; what will the standard deviation be?
1. 406,25
2. 0,39
3. 20
4. 3,54

Answer 1

$variance=\\=\sqrt{standard \, deviation}=\sqrt{12.5}=3.54$ .