Question

(05.05 mc)
given the frequency table, what percentage of the students that like country are also in grades 9-10? round to the nearest whole percent.
band preference for school dance
rap rock country row totals
grades 9-10 40 30 55 125
grades 11-12 60 25 35 120
column totals 100 55 90 245
22%
44%
55%
61%

Explanation:

Step1: Identify relevant values

Number of students who like country and are in grades 9-10: $55$; Total number of students who like country: $90$

Step2: Calculate the percentage

$\text{Percentage} = \frac{55}{90} \times 100\%$

Step3: Compute and round

$\frac{55}{90} \times 100\% \approx 61.11\%$, rounded to nearest whole percent is $61\%$

Answer:

D. 61%