The following frequency histogram represents the IQ scores of a random sample of

Question

The following frequency histogram represents the IQ scores of a random sample of strength-grade students. IQs are measured to the nearest whole number. The frequency each class is labeled above each rectangle. Use the histogram to answers parts How many students were sampled? Students Determine the class width The class width is Identify the classes and their frequencies. Choose the correct answer below. 2,70,79,3,80,89,12,90,99,54,,100-109,45,110-119,41,120-129,32,130-139,9,140-149,3,150-159,1 65,2,25,85,12,95,,54,105,43,115,41,125,32,835,9,145,3,155,1,,60-70,2,70-80,3,80-90,12,9-100,54,100-120,41,120-130,32,130-140,156,5,150,160,,1 Which class has the highest frequency? 90-99

Explanation / Answer

a.

200 students

b.

Class width = 10

c.

The answer is C

d.

90-99 has highest frequency

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