Respuesta :
The definition and the solution to the points can be defined as follows:
- The width of a class refers to differences between upper and lower classes (category).
- The midpoint of each class (or "classmark") could be calculated as a [tex]\text{middle point = lowest limit of class + upper limit of class 2}[/tex].
- Class boundary numbers for separate classes are the numbers used. The difference between the top class limit of one class and the lower class limit of the next class is the size of that class divider.
- The percentage of data elements of that class is the relative frequency of a data class.
Calculation:
For point a:
The width of the class refers to the difference between the upper and lower classes (category).
It is therefore [tex]\to \bold{52-50 = 2}[/tex]
For point b:
- The average upper and lower limits of each class is the medium of first class.
- For the first class: [tex]\to \bold{ \frac{(50+52)}{2}= \frac{102}{2} = 51}[/tex]
For point c:
- Class limits are halfway points between classes.
- The average upper limit of the previous class and lower limits of the given class are achieved for the lower class boundary of the given class.
- It is 49.5 to 52.5 for the first class.
For point d:
- Relative first-class frequency is the sum of first-class divided frequency.
[tex]=\bold{\frac{8}{(8+15+12+10+5)}}\\\\=\bold{\frac{8}{50}}\\\\=\bold{0.16}\\\\[/tex]
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