There is a mistake on lecture 5, calculation of groups frequencies. The instructor said that a number is included in a particular interval if that number is greater than the lowest bound and equal to or less than the largest bound. The frequency of the first interval is 2 (1 and 9), The first interval goes from 1 to 21, so 1 should not be included. Or the rule should be adjusted as: A number is included in a particular interval if that number is equal or greater than the lowest bound and less than the largest bound.

I thought the same, but the first number -in this case 1- is always included in the first interval, and the last number is always included in the last interval.

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Ibrahim Zebiri

Last answered:

14 Nov 2022

Posted on:

13 Nov 2022

A mistake on lecture 5

in Statistics / Numerical Variables. Frequency distribution table

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Mahmoud

Posted on:

14 Nov 2022

A mistake on lecture 5

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