Exam 21: Univariate Statistical Analysis

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

The term p-value stands for power-value.

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

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

The mathematical equation for statistical power is:

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

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

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

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

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.

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

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

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

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

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

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?

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

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

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

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