Quiz 7

Which of the following statistical methods should be used to analyze the association between region of the US and whether or not it is legal to carry a weapon in public? - Variance - Cross-tabulation - Median - Difference in means

- Cross-tabulation

For which of the following can a mean value be estimated? Mark all that apply. - Ethnicity - Income in dollars - College major subject - Age in years

- Income in dollars - Age in years

Which of the following is the definition of the median? - Average value - Middle value - Bottom half of a distribution - Most common value

- Middle value

Which of the following is the definition of the median? - Average value - Most common value - Bottom half of a distribution - Middle value

- Middle value

Which of the following types of univariate statistics suit a nominal variable? Mark all that apply. - Standard deviation - Mode - Frequency distribution - Mean

- Mode - Frequency distribution

When researchers changed the work environment to see how it affected worker productivity, they found that no matter what conditions the researchers changed (such as increasing the lighting), the workers seemed to work harder simply because they were part of a special experiment. This is an example of _______. - The Hawthorne effect - Regression to the mean - The John Henry effect - Confounding

- The Hawthorne effect

Which of the following are univariate distributions? Mark all that apply - The distribution of types of majors in the Bloustein School. - How the percentage of students who earn honors differs for public health than health administration majors. - How GPA differs for public policy than public health majors. - The GPA distribution of public health majors.

- The distribution of types of majors in the Bloustein School. - The GPA distribution of public health majors.

If Student B has a categorical independent variable and a continuous dependent variable, the bivariate statistic they should estimate is a ______. - Cross-tabulation - Interquartile range - t-test for difference in means - Mode

- t-test for difference in means

Match each statistical term with its meaning. Mean

Average value

Match each type of statistic with the level of measurement of the variables for which it is used. Cross-tabulation

Both independent and dependent variable are categorical

Match each type of statistic with the level of measurement of the variables for which it is used. Correlation

Both independent and dependent variables are continuous

Match each term to its definition. Regression

Extreme scores in initial testing move back toward the average in subsequent testing.

Match each statistical term with its meaning. Frequency distribution

List of how often each value of a variable occurs

Match each statistical term with its meaning. Median

Middle value, in a list of values sorted in numeric order

Match each statistical term with its meaning. Mode

Most common value

Match each type of statistic with the level of measurement of the variables for which it is used. ANOVA

Multi-category independent variable and continuous dependent variable

Match each term to its definition. Double-blind procedure

Neither the study subjects nor the researchers knows who is in the treatment and who is in the control group.

Match each term to its definition. Differential attrition

Subjects drop out of the experiment or control group at different rates that change the nature of the comparison between...

Match each term to its definition. Selection bias

Subjects in the control and treatment groups are different before the experiment begins.

Match each term to its definition. The Hawthorne Effect

Subjects' behavior and answers may change because they know they are being studied.

Match each type of statistic with the level of measurement of the variables for which it is used. Difference in means

Two-category independent variable and continuous dependent variable