chapter 15 education

77. Ms. Parez gave an exam to her students during the first week of class. Since students performed poorly, she added 20 points to everyone's score so that nobody would feel too discouraged. In changing the scores this way, Ms. Parez influenced the standard deviation and range in which of the following ways?

Both the standard deviation and range remained constant.

84. In a normal distribution, 95 percent of the scores fall between which two values?

Two standard deviations below the mean and two standard deviations above the mean

72. A group of students received the following scores on a quiz: 24, 20, 20, 16, 15, 13, 13, 13, and 10. What is the mode?

13

76. A group of students received the following scores on a quiz: 24, 20, 20, 16, 15, 13, 13, 13, and 10. What is the range?

14.0

74. A group of students received the following scores on a quiz: 24, 20, 20, 16, 15, 13, 13, 13, and 10. What is the median?

15

71. A group of students received the following scores on a quiz: 24, 20, 20, 16, 15, 13, 13, 13, and 10. What is the mean?

16

75. A group of students received the following scores on a quiz: 24, 20, 20, 16, 15, 13, 13, 13, and 10. What is the standard deviation?

4.47

70. Six students take a math test. Their scores are 71, 75, 78, 88, 98, and 100. What is the mean score of the test?

85

78. A person who gets the second-highest score of 20 people taking an exam would be assigned which percentile rank score?

90 percent

79. A person who gets the second-highest score of 40 people taking an exam would be assigned which percentile rank score?

95 percent

81. In a normal distribution for standardized testing of intelligence, approximately what percentage of scores fall between two standard deviations above and two standard deviations below the mean?

95 percent

31. An administrator wants to determine whether a ninth-grade biology class in one district is comparable in difficulty level and content to a ninth-grade biology class in another district. Which of the following approaches would provide the most valid comparison?

Having students in each class take a standardized exam and compare the results

90. The new principal, Mr. Bradshaw, poses the possibility of utilizing alternative assessment in classrooms. Which of the following refers to an alternative assessment?

having students create portfolios demonstrating improvement

36. Viola conducts a chemistry test. Which of the following strengthens the fact that the test conducted by Viola is valid?

The test assesses the students on the concepts discussed in the text.

34. Professor Robins administered two exams to his students during the final week of the semester. Each exam contained similar but unique items on the same content matter. Professor Robins was attempting to obtain which of the following?

alternate forms reliability

55. Mindy is on her way to school to take a test that will identify whether she will benefit from placement into gifted classes. What type of test will she take?

an aptitude test

38. Maxwell gets consistently high scores whenever he takes an intelligence test. Other indicators also suggest that Maxwell has a very high IQ. In Maxwell's case, the tests are best described as which of the following?

both reliable and valid

39. Richard has just received the scores from the standardized test administered by his school. He blames the test. Because English is his second language, the wording on the test was unfamiliar to him, and this was the main reason he could not get the correct answers. Richard's complaint stems from what problem with some standardized tests?

fairness

28. The high correlation between students' ACT scores and their future performance in college suggests that the ACT exam has high:

predictive validity

33. The principal sends out a memorandum suggesting a teachers' meeting to discuss high-stakes testing. Which of the following would be least likely to be on the agenda?

the issue of students requiring remedial work in a particular subject

85. In a normal distribution, 48 percent of the scores fall between which two values?

the mean and two standard deviations above the mean

35. Professor Martin conducts a math test. He calculates the scores on all even-numbered items and compares them with the scores on all odd-numbered items. He finds that the scores from the odd-numbered items are vastly different from the scores on the even-numbered items. Which of the following statements is true about the math test?

the test has low split half reliability