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Regents Exam Questions A2.S.4: Dispersion 4 Unit 13 Day 2 HW – VISCA – Alg 2 w Trig Page 1 Name: __________________________________ A2.S.4: Dispersion: Calculate measures of dispersion (range, quartiles, interquartile range, standard deviation, variance) for both samples and populations 1 The scores of one class on the Unit 2 mathematics test are shown in the table below. 3 The table below shows the scores that a class of students received on their latest review quiz. Find the standard deviation of these scores to the nearest tenth. Find the population standard deviation of these scores, to the nearest tenth. 4 Find, to the nearest tenth, the standard deviation of this set of data. 2 The accompanying table shows the scores on a classroom test. 5 Using the scores in the table below, find the standard deviation to the nearest tenth. What is the population standard deviation for this set of scores? 1) 10.2 2) 10.4 3) 25 4) 88 Regents Exam Questions A2.S.4: Dispersion 4 Unit 13 Day 2 HW – VISCA – Alg 2 w Trig 6 The table below shows the set of score data for an English examination. Find the standard deviation of these scores to the nearest tenth. Page 2 Name: __________________________________ 9 Using the accompanying set of data, find the standard deviation to the nearest tenth. 10 A random sample of readings was taken at the site of a radioactive spill. In the information chart below, x is the contamination level in microcuries and f is the number of readings at each contamination level. Compute the sample standard deviation of the contamination levels to the nearest tenth. 7 The table below shows the scores of 40 students on an advanced placement mathematics examination. Find the standard deviation to the nearest tenth. 11 The table below shows the grades for a college statistics class. 8 The table below shows raw scores on an 80question entrance examination. Find the standard deviation of these examination scores to the nearest tenth. Find the mean of the data. Find the standard deviation to the nearest tenth. Regents Exam Questions A2.S.4: Dispersion 4 Unit 13 Day 2 HW – VISCA – Alg 2 w Trig Page 3 Name: __________________________________ 12 The table below represents the weights of 10 girls from the seventh grade class. Find the standard deviation of these weights to the nearest tenth. 14 The table below represents scores earned by students on a math exam. Find the standard deviation of these scores to the nearest tenth. 13 The table below shows the grades for a class of students in Course III math. 15 The table below represents the weight, in pounds, of the students in Mrs. Grabenstein’s homeroom. Find , the mean of the data. Find, to the nearest tenth, the standard deviation of the data. Which statement is true with this given set of data? (1) median > mode (2) median = mode (3) median < mode Using this set of data, find the mean, median, mode, and standard deviation to the nearest tenth. 16 The table below shows the height in inches of ten girls on a basketball team. Find the mode, median, and standard deviation of these heights to the nearest tenth. Regents Exam Questions A2.S.4: Dispersion 4 Unit 13 Day 2 HW – VISCA – Alg 2 w Trig 17 Using the following set of data, find the mean and the standard deviation to the nearest tenth. Page 4 Name: __________________________________ 19. The table below shows the first-quarter averages for Mr. Harper’s statistics class 18 080039siii, A2.S.4 Find, to the nearest tenth, the standard deviation for the following set of data. What is the population variance for this set of data? 1) 8.2 3) 67.3 2) 8.3 4) 69.3 Regents Exam Questions A2.S.4: Dispersion 4 www.jmap.org