Answer :
The relative frequency of the 3rd class, rounded to the nearest tenth of a percent, is approximately 23.1%.
To find the relative frequency of the 3rd class, we need to calculate the proportion of the total frequencies represented by that class.
Let's calculate the relative frequency step by step:
Step 1: Find the total frequency by summing up all the frequencies given in the table.
Total frequency = 4 + 25 + 9 + 1 + 0 = 39
Step 2: Find the frequency of the 3rd class, which is 9.
Step 3: Calculate the relative frequency by dividing the frequency of the 3rd class by the total frequency and multiplying by 100 to express it as a percentage.
Relative frequency of the 3rd class = (9 / 39) * 100 ≈ 23.1%
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