Exam 12: Data Analysis: Hypothesis Testing Related to Differences, correlation, and Regression

The ________ is a statistic that assumes that the variable has a symmetric bell-shaped distribution and the mean is known (or assumed to be known)and the population variance is estimated from the sample.

The ________ is a statistic that assumes that the variable has a symmetric bell-shaped distribution and the mean is known,and the population variance is estimated from the sample.

It is not possible to conduct hypothesis testing if the data collected in social media are qualitative in nature.

Parametric tests provide inferences for making statements about the means of parent populations.

A(n)________ of sample variance may be performed if it is not known whether the two populations have equal variance.

A(n)________ is commonly used for the purpose of providing inferences for making statements about the means of parent populations.

________ are hypothesis testing procedures that assume the variables of interest are measured on at least an interval scale.

A frequency distribution that depends on two sets of degrees of freedom is called a(n)________.

In many marketing research applications,the observations for two groups are not selected from independent samples.Rather,the observations relate to ________ in that the two sets of observations relate to the same respondents.

The t statistic is a statistic that assumes that the variable has a symmetric bell-shaped distribution and the mean is known; the population variance is estimated from the sample.

The t statistic is calculated by assuming that the sample size is large.

The product moment correlation is also referred to as regression correlation.

The ________ coefficient is the slope obtained by the regression of y on x when the data are standardized.

An F-test is commonly used for the purpose of providing inferences for making statements about the means of parent populations.

________ involves a single dependent variable and two or more independent variables.

According to the text,the t distribution is similar to the ________ in appearance.

The t statistic is calculated by assuming that all of the following exists EXCEPT that the ________.

In a short essay,list at least three statements that exhibit a single variable against a known or given standard.

Two samples that are not experimentally related are called ________.

In multiple regression,the strength of association is measured by the square of the multiple correlation coefficient,which is called the coefficient of multiple determination.