1. Tardigrade
  2. Question
  3. Mathematics
  4. The following information relates to a sample of size 60: Sigma x2=18000, Sigma x=960 The variance is

Question Error Report

Thank you for reporting, we will resolve it shortly

Back to Question

Q. The following information relates to a sample of size $60 : \Sigma x^{2}=18000, \Sigma x=960$ The variance is

Statistics

Solution:

Variance $=\frac{\Sigma x_{i}^{2}}{n}-\left(\frac{\Sigma x_{i}}{n}\right)^{2}$
$=\frac{18000}{60}-\left(\frac{960}{60}\right)^{2}=300-256=44$