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

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Question 21

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The ________ is the probability of rejecting the null hypothesis when it is false and should be rejected.

A) level of significance
B) z-test
C) test statistic
D) power of a test
E) incidence of difference

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Question 22

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A hypothesis test using the standard normal distribution is called the ________.

A) F-test
B) p-test
C) t-test
D) z-test
E) poisson test

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Question 23

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Cross-tabulation with two variables is known as twice-tabulation.

The test of the null hypothesis is a(n) ________ test if the alternative hypothesis is expressed directionally.

Type II error occurs when the sample results lead to nonrejection of a null hypothesis that is in fact false.

If the distribution is asymmetric and the variable is measured on a nominal scale,the median should be used.

The two-tailed test is more conservative than the one-tailed test.If a hypothesis is rejected using a two-tailed test,it will also be rejected using a one-tailed test.

If the distribution is asymmetric and the variable is measured on a nominal scale,the ________ should be used as a measure of location.

According to the text,which of the following represents the highest peak of the distribution?

According to the text,the range measures the spread of the data.

A statement that some difference or effect is expected is called a(n) ________.

Cross-tabulation examines associations between variables,not causation.

Data collected in social media often lend themselves to basic analysis involving frequencies,percentages and cross-tabulations.

The difference between the smallest and largest values of a distribution is called the ________.

A ________ is a cross-tabulation table that contains a cell for every combination of categories of the two variables.

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

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

In a short essay,list and discuss the two types of errors that can occur whenever inferences are drawn about a population.

A mathematical distribution whose objective is to obtain a count of the number of responses associated with different values of one variable as to express these counts in percentage terms is called frequency distribution.

The valid percentage column in a frequency distribution represents percentages calculated by excluding the cases with missing values.