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A distribution is a mathematical description of probabilities or frequencies.

5 votes
Accepted

How did Likert calculate sigma values in his original 1932 paper?

Thorndike's Table 22 displays the expected value of a doubly-truncated normal distribution, which can be seen as a conditional expectation given that the variate is in an interval specified by quantil …
r.e.s.'s user avatar
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9 votes
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How to fit a Weibull distribution to input data containing zeroes?

(As others have pointed out, a Weibull distribution is not likely to be an appropriate approximation when the data are integers only. The following is intended just to help you determine what that pre …
r.e.s.'s user avatar
  • 301