Exam 2: Frequency and Probability Distributions
Exam 1: Introduction and Mathematical Preliminaries146 Questions
Exam 2: Frequency and Probability Distributions150 Questions
Exam 3: Measures of Central Tendency and Variability154 Questions
Exam 4: Percentiles,percentile Ranks,standard Scores,and the Normal Distribution176 Questions
Exam 5: Pearson Correlation and Regression: Descriptive Aspects152 Questions
Exam 6: Probability149 Questions
Exam 7: Estimation and Sampling Distributions151 Questions
Exam 8: Hypothesis Testing: Inferences About a Single Mean160 Questions
Exam 9: Principles of Research Design and Statistical Preliminaries for Analyzing Bivariate Relationships150 Questions
Exam 10: Independent Groups T-Test149 Questions
Exam 12: One-Way Repeated Measures Analysis of Variance140 Questions
Exam 13: Pearson Correlation and Regression: Inferential Aspects143 Questions
Exam 14: Chi-Square Test145 Questions
Exam 15: Nonparametric Statistics135 Questions
Exam 16: Two-Way Between-Subjects Analysis of Variance117 Questions
Exam 17: Overview and Extension: Statistical Tests for More Complex Designs124 Questions
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There are numerous hard-and-fast rules for presenting frequency information.
(True/False)
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All distributions in the family of _____ distributions are symmetrical and characterized by a "bell shape."
(Multiple Choice)
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A Bar graph is different then a frequency histogram since the ____________________.
(Short Answer)
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The concepts of cumulative frequencies,cumulative relative frequencies,and cumulative percentages are not applicable to frequency distributions for qualitative variables.
(True/False)
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Statisticians conceptualize a probability distribution of a _____ in terms of a probability density function.
(Multiple Choice)
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Because frequency graphs can be misleading depending on how the abscissa and ordinate are formatted,behavioral scientists have adopted a _____.
(Multiple Choice)
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Dr.Jones using the data above reported that 1 person out of his 100 subjects scored a perfect score of 25.This may be a _____.
(Multiple Choice)
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In a frequency histogram,the ordinate represents the frequency with which each score occurred.
(True/False)
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For any given score,the cumulative frequency is the frequency associated with that score plus the sum of all frequencies below that score.
(True/False)
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In a frequency polygon,the vertical bar denotes the _____,and the horizontal bar denotes the _____.
(Multiple Choice)
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Cumulative relative frequencies are not appropriate for ____ variables.
(Multiple Choice)
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In constructing a frequency table,it would be neither practical nor informative to list 100 different values,each with a frequency of 1.
(True/False)
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A frequency distribution cannot be created for qualitative data,because these variables are not measured on any mathematical scale.
(True/False)
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When we are concerned with a continuous variable,such as the degree of hyperactivity,frequencies and relative frequencies should be thought of in terms of the _____ of the scores.
(Multiple Choice)
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A table that lists scores on a variable and shows the number of occurrences of each score is called a _____ distribution.
(Multiple Choice)
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If the lowest score in a distribution is 47 and the highest score is 99 and you used six groups,what is the appropriate interval size?
(Multiple Choice)
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