Frekans Poligonu ((full))

In exploratory data analysis, graphical representations help researchers understand underlying patterns without complex calculations. While histograms are common, the frequency polygon offers several advantages: easier comparison of multiple groups, a cleaner visual when intervals are many, and an approximation of the probability density curve. It is especially useful in education, psychology, economics, and quality control.

| Class Interval | Frequency (f) | |----------------|---------------| | 30 – 40 | 4 | | 40 – 50 | 6 | | 50 – 60 | 12 | | 60 – 70 | 18 | | 70 – 80 | 8 | | 80 – 90 | 2 | frekans poligonu