Frequency Distribution

Topic: Frequency Distribution
Student Name: Abdul Hafeez
Class: B.Ed. (Hons) Elementary
Project Name: “Young Teachers' Professional Development (TPD)"
"Project Founder: Prof. Dr. Amjad Ali Arain
Faculty of Education, University of Sindh, Pakistan

1. Topic: Frequency Distribution Assign By: Dr Amjad Ali Arian Presenter: Abdul Hafeez Roll NO: 2k16/BEDEL/62

2. FREQUENCY Frequency is the number of occurrences of a repeating event per unit of time. Frequency describes the number of waves that pass a fixed place in a given amount of time. The symbols most often used for frequency are F .

3. DISTRIBUTION Distribution is the process of moving a product from its manufacturing to its customers. The action of sharing something out among a number of recipients, the way in which something is shared out.

4. FREQUENCY DISTRIBUTION A frequency distribution is a list, table or graph that displays the frequency of various outcomes in a sample. Each entry in the table contains the frequency or count of the occurrences of values within a particular group or interval. A frequency distribution is an overview of all distinct values in some variable and the number of times they occur. That is, a frequency distribution tells how frequencies are distributed over values.

5. TYPES OF FREQUENCY DISTRIBUTION Relative frequency distribution Cumulative frequency distribution

6. RELATIVE FREQUENCY DISTRIBUTION A frequency distribution where each of the class frequencies is divided by the total no of observations.

7. CUMULATIVE FREQUENCY DISTRIBUTION Technically a cumulative frequency distribution is the sum of the class and all classes below it in a frequency distribution. All that means is you’re adding up a value and all the values that came before it.

8. FREQUENCY DISTRIBUTION TABLE 139, 145, 150, 145, 136, 150, 152, 144, 138, 138 This frequency table will help us make better sense of the data given. Also when the data set is too big (say if we were dealing with 100 students) we use tally marks for counting. It makes the task more organized and easy. Below is an example of how we use tally marks.

9. FREQUENCY DISTRIBUTION GRAPH Using the same above example we can make the following graph

10. SOLVED EXAMPLE FOR YOU Q: The table gives the number of snacks ordered and the number of days as a tally. Find the frequency of snacks ordered. Sol: From the frequency table the number of snacks ordered ranging between 2-4  is 4 days 4 to 6  is 3 days 6 to 8 is 9 days 8 to 10 is 9 days 10 to 12 is 7 days. So the frequencies for all snacks ordered are 4, 3, 9, 9,7