Exam 20: Data Analysis: Analyzing Multiple Variables Simultaneously

If the F-value in ANOVA produces a significantly high p-value (a.k.a."Sig." in SPSS)of 0.11 or more,then it is appropriate to proceed with a post-hoc test (e.g. ,Duncan).

When independent variables in a multiple regression equation are highly correlated among themselves,it indicates the existence of ____.The statistics used to measure if this exists is called VIF.

Let's assume we find in a study that the Pearson's correlation coefficient between number of years of education and cigarette smoking is -0.73.This means that as education level increases

In the chi-square analysis,the greater the differences between the observed frequencies and the expected frequencies,the less likely it is that there will be a statistically significant relationship.

Assuming the two predictors X₁ and X₂ are not correlated,the coefficients of partial regression, and ,can be interpreted as the

A graphic technique in which a sample element's scores on two variables are used to position the element on a graph so that the nature of the relationship between two variables can be observed is called a(n)____________________.

A statistical technique used with a continuous dependent variable and one or more categorical independent variables is called a(n)____________________.

Exhibit 20.1 A researcher is interested in comparing the usage of bank debit cards by consumers in rural (r)and urban (u)areas.Each year for the past five years,she has surveyed 500 individuals (one-half urban,one-half rural)randomly selected from across the United States.She is specifically interested in any differences that may exist between the two groups with regard to usage.The results of the current study indicate that people in urban areas use bank debit cards 12 times per month on average ( ),while those in rural areas use bank cards 10 times per month on average ( ). Refer to Exhibit 20.1.Assuming that the standard error of estimate for the difference in means is 1.5,calculate the value of the test statistic that would be used in the comparison of the two means.

The value of the product-moment coefficient of correlation ranges from

The numerator in the Pearson product-moment correlation coefficient formula

If the correlation between two variables x and y is equal to -0.90,which of the following is TRUE?

A simple regression is a statistical technique used to derive an equation that relates a single continuous dependent variable to two or more independent variables.

Exhibit 20.2 Suppose that the relationship between sales (Y,in $000)and number of salespeople (X)is represented by the following regression equation: Y = 105.2 + 35.8X Refer to Exhibit 20.2.What will average sales be equal to when 10 salespeople are used?

A gum manufacturer wants to determine whether blue packaging or red packaging is preferred.The company performs a sales test by introducing red packages into a random sample of ten stores and blue packages are introduced in an independent,random sample of ten stores.The technique most appropriate for analyzing the data is

Volvo cars,which have typically been positioned high on the safety attributes wants to know if people will respond favorably to proposed style changes.A sales manager wants to know if salespersons' morale is related to increases in recognition awards.These are questions that may be answered through

A research study involving the research question: "On the basis of a survey of husband-wife households,is there a significant difference between the mean attitude score of husbands and that of wives toward our product?" will involve a

Cross tabulation work equally will with continuous measures that have been recast as categorical measures.

Which of the following is a technique that measures the association between a criterion variable and one or more independent variables?

In ANOVA,a ____ allows a researcher to examine simultaneously the effects of two or more independent variables.

Multicollinearity is said to be present in a regression problem if the