Exam 13: Choosing Statistical Procedures for Research Problems

Below is a description of a research situation encountered in the social sciences. Based on the information provided, indicate the appropriate statistical procedure for testing the significance of differences or strength of correlation. A social researcher is planning on studying the relationship between gender and years of education. Which statistic would one use to test educational differences between males and females?

Below is a description of a research situation encountered in the social sciences. Based on the information provided, indicate the appropriate statistical procedure for testing the significance of differences or strength of correlation. A researcher interested in quiz performance and temperature manipulates the room temperature and gives quizzes to different classes over a period of time. He then ranks the temperature (hot, comfortable, or cold) and the number of mistakes each student makes (none, low, medium, or high), and presents a cross-tabulation. What test of statistical association would one employ to test the association between temperature and performance?

In practice, the sample mean and its __________ are used to construct a confidence Interval.

Correlation measures the degree to which 2 variables are related to __________.

Below is a description of a research situation encountered in the social sciences. Based on the information provided, indicate the appropriate statistical procedure for testing the significance of differences or strength of correlation. A researcher is interested in examining the relationship between marital status (married, widowed, divorced, separated, or never married) and the number of times a person had sex in the last year. What statistical technique will test the proposed relationship between marital status and the number of times a person has had sex in the last year?

An important property of the normal curve is its __________.

Introduced in Chapter 10, Pearson's r measures the linear _______ between two ______ -Level variables.

Chapter 3 presented three measures of central __________.

Below is a description of a research situation encountered in the social sciences. Based on the information provided, indicate the appropriate statistical procedure for testing the significance of differences or strength of correlation. A researcher is interested in analyzing the relationship between percentage of a country that is urbanized and the average male life expectancy in that country. What statistical procedure(s) should the researcher use to see if there is an association between percent of the country that is urbanized and male life expectancy?

If the coefficient of determination for a particular regression is .64 , what is Pearson's correlation coefficient?

Compared with parametric tests, nonparametric techniques are __________ powerful,__________ able to reject the null hypothesis when it is false.

Chapter 12, on nonparametric measures, extended the correlational approach to variables That are measured at __________ than the __________ level.

Below is a description of a research situation encountered in the social sciences. Based on the information provided, indicate the appropriate statistical procedure for testing the significance of differences or strength of correlation. A researcher is interested in the strength of the relationship between income and life expectancy. What statistical procedure(s) would one use to determine the strength of correlation between years of education and life expectancy?

The modal value represents the __________value.

The t ratio offers a method for determining whether a difference in means between __________ drawn samples is large enough to reject the null hypothesis.

Below is a description of a research situation encountered in the social sciences. Based on the information provided, indicate the appropriate statistical procedure for testing the significance of differences or strength of correlation. A social researcher is interested in studying whether social class influences life expectancy. The researcher divides social class into three categories: upper class, middle class, and lower class. Life expectancy is measured in years. Which statistical procedure would one apply to test for differences in life expectancy between social classes?

Below is a description of a research situation encountered in the social sciences. Based on the information provided, indicate the appropriate statistical procedure for testing the significance of differences or strength of correlation. A sociologist is interested in the relationship between the type of education chosen for a child (public school or private school) and the race of the family (White, Black, Hispanic,Asian, Other). Which statistical test would one apply to determine the degree of association between race and type of schooling?

Below is a description of a research situation encountered in the social sciences. Based on the information provided, indicate the appropriate statistical procedure for testing the significance of differences or strength of correlation. A social researcher is interested in studying the relationship between gender and political party affiliation (Democrat, Republican, or Other). What statistic would one employ to look at this potential relationship?

The three types of data described in Chapter 1 are:

Described in Chapter 11, regression allows us to quantify the impact of one variable on Another by calculating the __________ of the regression line.