Determine the relative frequency of the
percent of 7th grades who prefer mountains.
Round the percentage to the nearest tenth.
(Students) (Seacoast) (Mountains) (Total)
7th grade 70 40 110
8th grade 90 110 200
Totals 160 150 310
For 7th graders, the percent who prefer mountains is calculated as :
Relative Frequency = (Number of 7th graders who prefer mountains) / (Total number of 7th graders) * 100
Relative Frequency = 40 / 110 * 100
Relative Frequency = 0.3636 * 100
Relative Frequency = 36.4%
Therefore, the relative frequency of 7th graders who prefer mountains is 36.4%.