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Exam 21: Univariate Statistical Analysis

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Question 31

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Which type of statistical analysis test hypotheses involves only one variable?

A) primary statistical analysis
B) bivariate statistical analysis
C) univariate statistical analysis
D) monovariate statistical analysis

E) A) and C)
F) B) and C)

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Question 32

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A statement which expresses the opposite of the null hypothesis is called the ____________________ hypothesis.

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Question 33

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The mathematical equation for statistical power is:

When the data are in ____ form,and the sample size is ____,the researcher should use parametric statistical procedures.

In practical terms,researchers state only the substantive (i.e. ,alternative)hypothesis implying what is expected to be observed in the sample.

When the data are interval or ratio scaled and the sample size is large,____________________ statistical procedures are appropriate.

The term p-value stands for power-value.

When the probability of a Type II error is ____,the probability of a Type I error is ____.

The t-test is strictly appropriate for tests involving small sample sizes with unknown standard deviations.

Failing to identify a hypothesized difference using a sample result when one really does exist in the population is which type of error?

The opposite of the null hypothesis is called the ____ hypothesis.

The exact point where the hypothesis changes from not being support to being supported depends on how much risk the researcher is willing to accept and on the variability of the measure.

Selection of the appropriate statistical test to use in a research study depends on:

The two major groupings of statistical procedures are parametric statistics and nonparametric statistics.

Describe the chi-square test for goodness-of-fit and explain when it is the appropriate test.

In hypothesis testing,the symbol typically used to specify the significance level of the test is b.

The symmetrical,bell-shaped distribution that has a mean of zero and a standard deviation of one is called the ____________________.

Which type of error occurs when the researcher concludes a relationship exists when in fact one does not exist?

When a researcher sets an acceptable significance level a priori (a) ,he or she is determining how much tolerance he or she has for which type of error?

The scale of measurement used by the researcher determines the allowable statistical techniques in the research study.