IQs of 7th Grade Students K The following frequency histogram represents the IQ scores of a random sample of seventh-grade students. IQs are measured to the nearest whole number. The 80- frequency of each class is labeled above each rectangle. Use the histogram to answers parts (a) through (9). 60 46 48 44 Frequency 40- 30 20- 14 10 1 2 3 2 60 70 80 90 100 110 120 130 140 150 160 IQ scores O C. 65, 1; 75, 2; 85, 14; 95, 46; 105, 48; 115, 44; 125, 30; 135, 10; 145, 3; 155, 2 (d) Which class has the highest frequency? O A. 105 B. 100-109 O C. 100-110 O D. 90-99 (e) Which class has the lowest frequency? O A. 65 B. 60-69 O C. 150-159 Q D. 60-70 (f) What percent of students had an IQ of at least 130? % (Type an integer or a decimal. Do not round.) View an example Get more help - Clear all Check answer MacBook Air