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 earch class is labeled above each rectangle. Use the histogram to answers parts (a) through (g).
(a) How may students were smapled?
...........students
(b) Determine the class width
The class width is ........
(c) Identify the classes and their frequencies choose the correct answer below.
(a) 60-70,2; 70-80, 2; 80-90, 14:90-100, 43:100-110, 56: 110-120, 40; 120-130, 30:130-140, 9:140-150, 3:150-160, 1.
(b) 65,2; 75, 2,85, 14, 95, 43; 105,56; 115, 40; 125, 30; 135, 9; 145, 3;155, 1
(c) 60-69; 2; 70-79, 2; 80-89, 14; 90-99, 43. 100-109, 56; 110-119, 40; 120-129, 30; 130-139, 9: 140-149, 3; 150-159, 1.
(d) Wich class has the hgihest frequency?
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 earch class is labeled above each rectangle. Use the histogram to answers parts (a) through (g).
(a) How may students were smapled?
...........students
(b) Determine the class width
The class width is ........
(c) Identify the classes and their frequencies choose the correct answer below.
(a) 60-70,2; 70-80, 2; 80-90, 14:90-100, 43:100-110, 56: 110-120, 40; 120-130, 30:130-140, 9:140-150, 3:150-160, 1.
(b) 65,2; 75, 2,85, 14, 95, 43; 105,56; 115, 40; 125, 30; 135, 9; 145, 3;155, 1
(c) 60-69; 2; 70-79, 2; 80-89, 14; 90-99, 43. 100-109, 56; 110-119, 40; 120-129, 30; 130-139, 9: 140-149, 3; 150-159, 1.
(d) Wich class has the hgihest frequency?
