Polygon Math Education Presentation in Colorful Abstract Style .pptx

Graphs of a Frequency

1. FREQUENCY DISTRIBUTION Graphs KAREN GIMENA-DELA RAMA MAT-ENGLISH

2. understand how frequency distribution are used; organize data into frequency distribution table; and understand how graphical presentation of data are used. LEARNING OBJECTIVES

3. FREQUENCY is the number of times a data value or groups of data values (called classes) occur in a data set.

4. FREQUENCY DISTRIBUTION is the pattern of frequencies of a variable. It’s the number of times each possible value of variable occurs in a data set. They are visual displays that organise and present frequency counts so that the information can be interpreted more easily.

5. CLASS LIMIT The class limits are the lowest and the highest values that can be included in the class. 

6. HOW TO CONSTRUCT FREQUENCY DISTRIBUTION TABLE A polygon that has all equal sides and angles. REGULAR POLYGON IRREGULAR POLYGON A polygon that has unequal sides and angles. STEPS: 1. Determine the range. RANGE= Highest Score - Lowest Score

7. HOW TO CONSTRUCT FREQUENCY DISTRIBUTION TABLE A polygon that has all equal sides and angles. REGULAR POLYGON IRREGULAR POLYGON A polygon that has unequal sides and angles. STEPS: 2. Determine the number of class intervals Depends on the number of scores and data.

8. HOW TO CONSTRUCT FREQUENCY DISTRIBUTION TABLE A polygon that has all equal sides and angles. REGULAR POLYGON IRREGULAR POLYGON A polygon that has unequal sides and angles. STEPS: 3. Determine the size of the interval Length of C.I , = RANGE # of class interval

9. HOW TO CONSTRUCT FREQUENCY DISTRIBUTION TABLE A polygon that has all equal sides and angles. REGULAR POLYGON IRREGULAR POLYGON A polygon that has unequal sides and angles. EXAMPLE: Contruct a frequency distribution table using the score of Grade 7 students in summative assessment in Mapeh 7 15 15 8 21 20 11 12 13 9 22 21 16 17 11 8 17 28 21 21 17 16 18 25 20 12 20 18 21 22 12 1.) Determine the range Range = HS-LS 2.) Determine the number of class intervals. Range = 20 i = 4 3.) Determine the size of the interval. Length i = R # of CI # of i = 6 28 - 8 = 20

10. HOW TO CONSTRUCT FREQUENCY DISTRIBUTION TABLE A polygon that has all equal sides and angles. REGULAR POLYGON IRREGULAR POLYGON A polygon that has unequal sides and angles. EXAMPLE: Contruct a frequency distribution table using the score of Grade 7 students in summative assessment in Mapeh 7 15 15 8 21 20 11 12 13 9 22 21 16 17 11 8 17 28 21 21 17 16 18 25 20 12 20 18 21 22 12 Range = 20 i = 4 # of i = 6 Score Tally Frequency 7-10 11-14 15-18 19-22 23-26 27-30 f = 30 FREQUENCY TABLE OF THE SCORE OF GRADE 7 STUDENTS IN MAPEH 7 3 6 9 10 1 1

11. Cumulative Frequency Distribution A Cumulative Frequency Distribution is used to determine how many or what proportion of the data values are below or above a certain value. Cumulative Frequency Less Than Method More Than Method

12. More Than Method Class Interval Upper Limit Frequency, f Cumulative Frequency 10 up to 14 14 5 5 14 up to 18 18 9 14 18 up to 22 22 8 22 22 up to 26 26 4 26 26up to 30 30 4 30 Class Interval Lower Limit Frequency, f Cumulative Frequency 10 up to 14 10 5 30 14 up to 18 14 9 25 18 up to 22 18 8 16 22 up to 26 22 4 8 26up to 30 26 4 4 Less Than Method

13. Graphs Group Data Ungroup Data For Continuous data or quantitative variables: The three commonly used graphic forms are Histograms Frequency Polygons Cumulative Frequency Curve . Line graphs Bar Chart Pie Chart

14. Histogram   A Histogram is a graph in which the class midpoints or limits are marked on the horizontal axis and the class frequencies on the vertical axis. The class frequencies are represented by the heights of the bars and the bars are drawn adjacent to each other.    

15. Frequency Polygons A Frequency Polygon consists of line segments connecting the points formed by the class midpoint and the class frequency.

16. Bar Chart

17. Line graphs

18. Pie Chart

19. Any Question ????