Students heights in inches were obtained as part of a study and a frequency distribution was constructed with the first class having a lower limit of 50 inches. The class widths are 6 inches. What is the frequency of the second class in the distribution?
51 51 54 56 56 57 59 61 61 62 65 69 70 70 71 71 72 73
a. 10
b. 6
c. 4
d. 5
To find the frequency of the second class in the distribution, we need to calculate the number of values that fall within the range of the second class.
Given that the first class has a lower limit of 50 inches and the class widths are 6 inches, the first class covers the range from 50 to 56 inches (inclusive). The second class, therefore, covers the range from 57 to 63 inches (inclusive).
Looking at the given data, we can see that there are three values (57, 59, and 61) that fall within this range. Therefore, the frequency of the second class is 3.
So, the answer is not provided in the options provided.