How To Make a Relative Frequency Distribution Table
The Organic Chemistry Tutor
5 min, 9 sec
The video provides a step-by-step explanation on how to construct a relative frequency distribution table using a sample dataset.
Summary
- The presenter lists a dataset and explains the process of creating a frequency table by tallying the occurrences of each number.
- The total frequency is calculated by summing the individual frequencies, which is then used to determine the relative frequencies.
- Relative frequencies are obtained by dividing the frequency of each value by the total frequency, and the results are added to the table.
- The presenter verifies the correctness of the relative frequency distribution by ensuring the sum of all relative frequencies equals 1.
- Viewers are encouraged to subscribe, turn on notifications, and watch a follow-up video on cumulative relative frequency.
Chapter 1
The presenter introduces the concept of a relative frequency distribution table and begins listing a dataset.
- The video begins with an intention to explain how to construct a relative frequency distribution table.
- The presenter starts listing a dataset with numbers ranging from 2 to 8.
Chapter 2
The first step in creating the relative frequency table is to tally the occurrences of each value in the dataset.
- A frequency table is created with columns for value (V), frequency (F), and relative frequency (RF).
- Starting with the lowest value, the presenter counts the frequency of each number in the dataset.
- Frequencies for numbers 2 through 8 are determined and recorded in the frequency table.
Chapter 3
The presenter sums the frequencies of all values to establish the total frequency required to calculate relative frequencies.
- The sum of the frequency column is calculated to be 20.
- Total frequency is crucial for determining the relative frequency of each value.
Chapter 4
Relative frequencies for each value are calculated and the presenter demonstrates verifying the accuracy of the table.
- Relative frequency is calculated by dividing the frequency of each value by the total frequency of 20.
- Each relative frequency is written as a decimal, such as 0.30 for a frequency of 6, and 0.15 for a frequency of 3.
- The presenter emphasizes the importance of the sum of all relative frequencies equalling 1 to ensure accuracy.
Chapter 5
The video concludes with a summary of the process, a call to subscribe and a promotion for a related video.
- The process of constructing the relative frequency table is summarized.
- The audience is encouraged to subscribe and activate notifications.
- A follow-up video on cumulative relative frequency is promoted.