To calculate the marginal relative frequency for drivers from the data you provided, we need to first find the total number of drivers and then the total number of individuals in the dataset.
From the data you shared, we can organize it as follows:
-
Junior Drivers: 26
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Junior Non-Drivers: 38
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Total Junior: 64 (which is the sum of Junior Drivers and Junior Non-Drivers, and this matches)
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Senior Drivers: 51
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Senior Non-Drivers: (Total Seniors - Senior Drivers = 55 - 51 = 4)
Now, let’s summarize the totals:
- Total Drivers (Junior + Senior) = 26 + 51 = 77
- Total Individuals (Junior + Senior) = 64 + 55 = 119
Next, to find the marginal relative frequency for drivers:
\[ \text{Marginal Relative Frequency for Drivers} = \frac{\text{Total Drivers}}{\text{Total Individuals}} = \frac{77}{119} \]
Calculating that:
\[ \frac{77}{119} \approx 0.6462 \]
Now rounding to the nearest whole number gives us approximately:
65%
So, the marginal relative frequency for drivers is 65%.