Exam 4: Percentiles percentile Ranks standard Scores and the Normal Distribution
Exam 1: Introduction and Mathematical Preliminaries146 Questions
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Exam 4: Percentiles percentile Ranks standard Scores and the Normal Distribution176 Questions
Exam 5: Pearson Correlation and Regression: Descriptive Aspects152 Questions
Exam 3: Measures of Central Tendency and Variability154 Questions
Exam 7: Estimation and Sampling Distributions151 Questions
Exam 8: Hypothesis Testing: Inferences About a Single Mean160 Questions
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Exam 9: Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships150 Questions
Exam 10: Independent Groups T -Test149 Questions
Exam 13: One-Way Repeated Measures Analysis of Variance140 Questions
Exam 14: Pearson Correlation and Regression: Inferential Aspects143 Questions
Exam 15: Chi-Square Test145 Questions
Exam 16: Nonparametric Statistics135 Questions
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An instructor has given his final exam and scores that are normally distributed.Nancy scores a 90 and Ronald scores a 75.The class mean on the exam was 85 and the standard deviation was 36.What is Nancy's T score? (Hint use formula: mean=50 +10 (standard or Zscore)
(Multiple Choice)
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John scores an 85 on his psychology exam.The other relevant characteristics of the distribution are as follows: = 75,s2 = 4.What is John's standard score?
(Multiple Choice)
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The score value corresponding to a given percentile rank is referred to as a standard score.
(True/False)
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Another name for a standard score in a normal distribution is _____.
(Multiple Choice)
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The scores below represent the results of an in-class quiz worth 10 points.
How many students scored a 5 or below?
(Multiple Choice)
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The proportion of scores occurring between standard scores of 0 and -1 is _____ the proportion of scores occurring between standard scores of 0 and +1.
(Multiple Choice)
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A standard score converts a score from its original,or raw,form to a form that takes into consideration its standing relative to the mean and standard deviation of the entire distribution of scores.
(True/False)
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Which of the following does a percentile rank and a standard score have in common?
(Multiple Choice)
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A standard score is the difference between the original score and the standard deviation,divided by the mean.
(True/False)
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If Jack's standard score on his math test is .60 and -.75 on his English he did better on his____.
(Short Answer)
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A standard score represents the number of _____ that a score falls above or below the mean.
(Multiple Choice)
4.7/5
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An instructor has given his final exam,and scores are approximately normally distributed.Nancy scores a 90 and Ronald scores a 75.The characteristics of the distribution are as follows:
= 85,
S2 = 36.Approximately what percentage of scores falls at or between Nancy's and Ronald's scores?
(Multiple Choice)
4.8/5
(85)
Percentile ranks must always be interpreted relative to the _____ upon which the scores are based.
(Multiple Choice)
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In a normal distribution,approximately _____ of all scores fall between standard scores of -1 and +1.
(Multiple Choice)
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Given a normal distribution,what z score would correspond to the 50th percentile?
(Multiple Choice)
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