Question
To find the mean of grouped data:
Answers
GPT 3.5
1. List the data in groups or intervals, along with the frequency of each group.
2. Multiply each group's midpoint by its frequency.
3. Add up all the products from step 2 to find the sum of (midpoint * frequency).
4. Add up all the frequencies to find the total number of data points.
5. Divide the sum from step 3 by the total number of data points from step 4 to find the mean.
Mean = Sum of (midpoint * frequency) / Total number of data points
2. Multiply each group's midpoint by its frequency.
3. Add up all the products from step 2 to find the sum of (midpoint * frequency).
4. Add up all the frequencies to find the total number of data points.
5. Divide the sum from step 3 by the total number of data points from step 4 to find the mean.
Mean = Sum of (midpoint * frequency) / Total number of data points