Question

part 1 of 5
what is the class width for a frequency distribution with 7 classes?
the class width is 7.
part: 1 / 5
part 2 of 5
find the class limits. the first lower class limit is 60.
class limits
60 -
skin part
check
send data to excel
70 88 103 64 88 100 78 80 77 69
85 65 71 90 88 75 80 72 60 70
60 75 79 90 88 75 80 72 60 70

Explanation:

Step1: Find the maximum and minimum values

From the data, the maximum value \( \text{Max}=103 \) and the minimum value \( \text{Min} = 60 \).

Step2: Calculate the range

The range \( R=\text{Max}-\text{Min}=103 - 60=43 \).

Step3: Calculate the class width

The formula for class width \( w=\frac{R}{k}\), where \( k = 7 \) (number of classes). So \( w=\frac{43}{7}\approx6.14 \). Since class width is usually rounded up to a convenient number (often a whole number), we get \( w = 7 \).

Answer:

The class width is \( 7 \).