Exam 11: Data Analysis: Frequency Distribution, hypothesis Testing, and Cross-Tabulation

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Frequency data may be used to construct a histogram,or a vertical bar chart.

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The most common measures of variability are the range and variance.

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Type I error occurs when the sample results lead to the rejection of a null hypothesis that is in fact true.

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The mean squared deviation of all the values from the mean is called the variance.

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A measure of central tendency given as the value that occurs the most in a sample distribution is called the median.

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The mean is that value obtained by summing the values of all elements in a set and dividing by the number of elements.

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Which of the following often follows a well-known distribution,such as the normal,t,or chi-square distribution?

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A statistic that indicates the distribution's dispersion is called measures of variability.

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________ occurs when the sample results lead to the rejection of a null hypothesis that is in fact true.

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A statistical technique that describes two or more variables simultaneously and results in tables that reflect the joint distribution of two or more variables that have a limited number of categories or distinct values is called ________.

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A test of the null hypothesis where the alternative hypothesis is not expressed directionally is called a one-tailed test.

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The most commonly used statistics associated with frequencies are measures of location and measures of variability.

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The null hypothesis refers to a specified value of the population parameter,not a sample statistic.

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In a short essay,define cross-tabulation and discuss the three primary reasons cross-tabulation is widely used in commercial marketing research.

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Which of the following is used to estimate the average when the data have been collected using an interval or ratio scale?

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The power of a test is the probability of accepting the null hypothesis when it is in fact true and should be accepted.

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A measure of how close the sample has come to the null hypothesis is called the ________.

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A hypothesis test using the standard normal distribution is called the F-test.

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The mean,mode,and median are associated with the measures of location of frequency distribution.

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A frequency distribution ________.

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