THE FREQUENCY DISTRIBUTION TABLE

Table 1 The Frequency Distribution of the Ages of the Seventy-one Diabetic Patients at the Willi’s Knighton, Youree LA Class IntervalClass LimitClass BoundariesClassmarksFrequency 20 – – – – – – – – – – – – – – – – – – – – i = 5 n = 71

Characteristics of the interval (i) 1. The difference between two consecutive lower class limits. 2. The difference between two consecutive upper class limits. 3. The difference between two consecutive class marks. 4. The difference between two consecutive class boundaries.

Evaluation: Solve the following problems 1. Using i = 4. Determine 9 class intervals starting at 32. Calculate the Class Limits, Class Boundaries and Class Marks. 2. Given the following class marks: 17, 24, 31, 38, 45, 52, 59, 66. Determine the Class Limits, Class Boundaries and the interval size.

Case: The data listed below are the cholesterol level of selected sixty applicant students at the Louisiana State University when inspected physically by the university doctor Construct a Frequency Distribution Table showing the Class Limits, Class Boundaries, Classmarks, the Tally and the Frequency.

Steps in Constructing the Frequency Distribution Table 1.Determine the Range. R = Highest Value – Lowest Value 2.Divide the Range by the desired number of class intervals. It is suggested to have 7 to 15 class intervals. R ÷ desired number of c.i. = interval size 3.Calculate the first lower limit. The first lower limit should be divisible by the interval. Lower Limit ≤ Lowest Value ÷ interval size 4.Derive the rest of the lower limits and the upper limits. Calculate the Class Boundaries and Class Marks. 5.Do tallying and finally, count the frequencies for each class intervals.

THE OTHER DERIVED FREQUENCY DISTRIBUTION

Definitions : 1. Relative Frequency – The percentage of scores that fall within a class interval or category. rf = f/n x 100% 2.Cumulative Percentage Frequency – The percentage of scores that fall below and above a class interval or category. cpf = cf/n x 100%

Table 1 The Frequency Distribution of the Ages of the Seventy-one Diabetic Patients at the Willi’s Knighton, Youree LA Class IntervalClass LimitClass BoundariesClassmarksFrequency 20 – – – – – – – – – – – – – – – – – – – – i = 5 n = 71

Table 1.1 The Percentage Distribution of the Ages of the Seventy-one Diabetic Patients at Willi’s Knighton, Youree LA Class IntervalFrequencyRelative Frequency 20 – – – – – – – – – – 693 i = 5 n = 71100%

Table 1.1 The Percentage Distribution of the Ages of the Seventy-one Diabetic Patients at Willi’s Knighton, Youree LA Class IntervalFrequencyRelative Frequency 20 – – – – – – – – – – i = 5 n = 71100%

Table 2.1 The Percentage Distribution of the Cholesterol Level of the Sixty Student Applicants at The Louisiana State University Class IntervalFrequencyRelative Frequency 104 – – – – – – – – – – – 1891 i = 8 n = 60

Table 2.1 The Percentage Distribution of the Cholesterol Level of the Sixty Student Applicants at The Louisiana State University Class IntervalFrequencyRelative Frequency 104 – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – – 1.67 i = 8 n = 60