42 40 40 30 31 20 13 10 3 60 80 90 100 110 120 130 140 150 160 70 IQ Scores (a) How many students were sampled? 200 (b) Determine the class width.10 (c) What is the first class?Blank 3 (d) Which class...

Extracted text: 42 40 40 30 31 20 13 10 3 60 80 90 100 110 120 130 140 150 160 70 IQ Scores (a) How many students were sampled? 200 (b) Determine the class width.10 (c) What is the first class?Blank 3 (d) Which class has the lowest frequency? Blank 4 (e)Which class has the highest frequency? Blank 5 (f) What is the relative frequency of an IQ between 120 and 129? Write in decimal form with 3 significant figures. Blank 6 (g) Describe the shape of the distribution (negatively skewed, positively skewed, bell-shaped). Blank 7 Frequency


Extracted text: 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. IQs of 7th Grade Students 70 60 58 50 42 40 40 31 30 20 13 10 - 60 70 80 90 100 110 120 130 140 150 160 IQ Scores Frequency