IV. Write True if the statement is correct, otherwise write False.

1. Frequency polygon is a data presentation that uses bars in presenting the frequencies of each class.

2. Histogram is a presentation which shows that the frequency of each class is concentrated at the midpoint of each interval.

3. Median is a positional measure defined as the middlemost value in the distribution.

4. Mode is always present in every given set of data.

5. Histogram is used to plot categorical or qualitative data while regular bar graph is used to plot quantitative data.

V. Solve the following. Show all pertinent solutions. The shoe sizes of 9 people in a survey are: 8, 9, 9, 7, 10, 6, 7, 8, 8

Mean = __________ Median = __________ Mode = __________

VI. Suppose a student in a CMDI is enrolled in 4 subjects where not all of the subjects carry a three-unit load. Compute the weighted mean.

Subject	No. of units	Grade
Understanding the self	3	92
Mathematics In the Modern World	3	77
Management Accounting	5	85
Physical Education	2	90

VII. Compute the value of the range, average deviation, variance and the standard deviation of the following samples. 6, 7, 10, 11, 11, 13, 16, 18, 25

a. range

b. average deviation

c. variance

d. standard deviation