Statistical Glossary

The tool
  • Effect
    When you choose the Effect the tool determines the Effect type and the Effect size. Ignore this field if you know the required Effect type and the Effect size. If you do not know what to do, use Medium effect
  • Effect Size
    The expected effect that the test should detect.
    Any change in Effect will change this value!
    You may override this value.
  • Rounding
    When the number is bigger than one the calculator rounds to the required decimal places, but when the number is smaller than one, it rounds to the required significant figures
    For example, when you choose 2, it will format 88.1234 to 88.12 , and 0.001234 to 0.0012.