How do we construct a histogram for continuous data using unequal class widths?
Note 1
Do not use frequencies or relative frequencies on vertical scale, (y-axis of the histogram) when drawing histogram.
Note 2
Use density scale instead.
Note 3
Density is defined as:
\[ density= \frac{relative frequency}{class width} \]
Here is histogram correctly drawn with unequal class intervals and density scale
How do we sketch a histogram for continuous data using unequal class widths?
Example 1
Use the frequency table below to determine:
## Length.cut Freq
## 1 [0,40) 5
## 2 [40,50) 6
## 3 [50,60) 8
## 4 [60,70) 4
## 5 [70,100) 2