Answer:
See attached image and explanation below
Explanation:
For the first table:
The cumulative frequency for each class interval is obtained by adding that class frequency to the sum of all frequencies less than that class interval
So the table will look as in the first image attached
The second table talks about cumulative relative frequency and it uses the same technique as above but we are dealing with relative rather than absolute frequencies
The second image shows the correct values
Your relative frequency table (the third image you posted) is correct