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Sample Size Calculator For 2 Sample T Test

Hint: Use this calculator to determine the number of samples required to compare two population means
  • The minimum acceptable probability of preventing type 1 error
  • The minimum acceptable probability of preventing type 2 error
  • Enter the 1st population or sample mean
  • Enter the 2nd population or sample mean
  • This is the common standard deviation of the two populations or samples (also known as the pooled standard deviation)
  • Minimum samples required to check if the two means are similar or not