KINE 2050 Lecture Notes - Lecture 3: Kurtosis, Frequency Distribution, Multimodal Distribution
6 Mar 2018
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Class interval: this is pretty much the length from one number to another, 1-2, 2-3, have a width of 2, the di erence between the categories however is 1. When talking about the real limits, you want the di erence between the class intervals: you split the di erence between the groups, then add it to the upper and lower limit di erence. Grouped data: i is going to be the smallest possible unit of measure. Interval width is 4: di erence between the two intervals is 1. divided by 2 gives you 0. 5, then add it to the lower limit, and subtract from the upper limit, so it would be 0. 5-4. 5, and 4. 5-8. 5. Frequency distribution example: you have n=15, the range is . 34-. 25- . 09, smallest possible class interval increase is . 01, we want 5 intervals, size of the class interval: . 09/5 = . 02, which is the size of class intervals.
