IQs of 7th Grade Students 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 frequency of each class is labeled above each rectangle. Use the histogram to answers parts (a) through (g). 80- 60- 49 46 40- 20 13 60 70 80 90 100 110 120 130 140 150 160 1O scores (e) Which class has the lowest frequency? O A. 65 О В. 60-70 OC. 60-69 O D. 150-159 (f) What percent of students had an IQ of at least 130? % (Type an integer or a decimal. Do not round.) (g) Did any students have an IQ of 161? O A. Yes, because there is a bar in the 150-159 class. O B. No, because there are no bars, or frequencies, greater than an IQ of 160. O C. Yes, because there is a frequency of a score of 165. O D. No, because there is a bar in the 150-159 class.