Exam 2: Frequency and Probability Distributions

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The y-axis is called the____________________.

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One should always report at least 10 groups in a grouped frequency distribution.

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The total area under the _____ represents _____.

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Bar graphs are used to present_____.

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Below is a frequency distribution of the number of days absent from school in a group of 25 fifth-grade students. Below is a frequency distribution of the number of days absent from school in a group of 25 fifth-grade students.   What percentage of students were absent for 4 days? What percentage of students were absent for 4 days?

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Quantitative variables can be graphed using _____.

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Dr.Jones is studying the effects of caffeine on recall.She has collected data from 20 students.needs Dr.Jones is studying the effects of caffeine on recall.She has collected data from 20 students.needs     a.Calculate the relative frequency,cumulative frequency and cumulative relative frequency for the distribution. b.What is the relative frequency associated with a score of 9 on the recall test? c.What is the cumulative relative frequency associated with a score of 6? d.What is the cumulative frequency for the score of 3? e.Now draw a frequency histogram of the data set above. a.Calculate the relative frequency,cumulative frequency and cumulative relative frequency for the distribution. b.What is the relative frequency associated with a score of 9 on the recall test? c.What is the cumulative relative frequency associated with a score of 6? d.What is the cumulative frequency for the score of 3? e.Now draw a frequency histogram of the data set above.

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In a frequency histogram,the horizontal dimension is called the _____,and the vertical dimension is called the _____.

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The x-axis should contain the dependent variable.

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An outlier is a case or set of cases that shows an average score relative to the majority of cases in the data set.

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