To find the percentage of 7th graders who play bass, we need to determine the total number of 7th graders and how many of them play bass.
From the table, the number of 7th graders playing bass is given as:
- Bass (7th Grade): 11
Next, we need to find the total number of 7th graders. We add up the number of students playing each instrument in the 7th grade:
- Guitar: 14
- Bass: 11
- Drums: 15
- Keyboard: 18
Total number of 7th graders: \[ 14 + 11 + 15 + 18 = 58 \]
Now, to find the percentage of 7th graders who play bass, we use the formula for percentage: \[ \text{Percentage} = \left( \frac{\text{Number of students playing bass}}{\text{Total number of 7th graders}} \right) \times 100 \]
Plugging in the numbers: \[ \text{Percentage} = \left( \frac{11}{58} \right) \times 100 \]
Calculating this gives: \[ \text{Percentage} \approx 18.9655 \]
Rounding to the nearest whole number, the percentage of 7th graders who play bass is: \[ \boxed{19} \]
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