To calculate the class width for the given dataset, we need to determine the difference between the upper and lower boundaries of any given class interval and then add one.
Take the first class interval, which ranges from 220 to 229.
The lower boundary of the first class is 220, and the upper boundary is 229.
To find the class width, we perform the following calculation:
[tex]\[ \text{Class width} = (\text{Upper boundary} - \text{Lower boundary}) + 1 \][/tex]
Substituting the values, we get:
[tex]\[ \text{Class width} = (229 - 220) + 1 \][/tex]
Next, we calculate the difference between 229 and 220:
[tex]\[ 229 - 220 = 9 \][/tex]
Then we add 1 to this difference:
[tex]\[ 9 + 1 = 10 \][/tex]
Therefore, the class width is 10.
Class width [tex]$=$[/tex] 10
