Exam 11: Analysis of Quantitative Data

After administering a measure for Generalized Anxiety Disorder to eight-hundred randomly sampled participants,Dr.Winkler calculated the mean GAD-scores for men and for women.Dr.Winkler found the mean GAD-score for men was higher than the mean-GAD score for women,but concluded that the difference between the two means was not statistically significant.What is the difference between the sample means tell us about the relationship between the mean GAD-scores of men and women in the population?

Among the violent offenders in the following table,what is the ratio of males to females?

Define the following: -skewed distribution

Calculate the mean for the following six shoe sizes: 9,10,10,8,12,11.

In which neighbourhood(s)do half the families have incomes of $28,000 or more?

Susan weighs 140 pounds.You learn that for the women in her sorority the mean weight is 130 pounds,the median is 125,the mode is 120,and the standard deviation is 10 pounds.What is Susan's z-score in the distribution weight in the sorority?

Which neighbourhood(s)has an income distribution resembling a normal curve?

Discuss the concepts of control variables and trivariate tables.What are three limitations of trivariate tables?

What do social scientific researchers call the process of checking the categories of all variables for impossible codes?

Define the following: -normal distribution

Define the following: -statistical significance

Define the following: -linear relationship

A researcher wants to express the middle of a distribution of numbers whereby half the cases are higher and half the cases are lower than the middle value.What statistical measure should the researcher use?

Which of the following tells how well a set of variables explains a dependent variable?

What does it mean if someone tells you that they calculated a correlation of -0.75?

Define the following: -codebook

Explain how a researcher codes,enters,and cleans data so that it can be used for statistical analysis.What procedures are involved in each of these steps?

What feature of experimental research allows it to demonstrate causality without control variables?

What should you see in a scattergram if the bivariate relationship depicted in the scattergram is characterized by a high level of precision?

Define the following: -bimodal