Exam 17: Quantitative Data Analysis

If an experimental group's mean of 20 indicates fewer undesirable symptoms than the control group's mean of 25,and the standard deviation is 10,then the Cohen's d effect size should be reported as:

Whereas univariate analysis and subgroup comparisons focus on the descriptions of the people under study,the focus of bivariate analysis is on the relationships among the variables themselves.

The mean or median can be used to describe the central tendency of the variable "ethnicity."

A bivariate table is read by comparing the independent variable subgroups with one another in terms of a given attribute of the dependent variable.

Define and explain how to calculate odds ratios and risk ratios.

Given the following age distribution,the range is 12,15,8,17,34,43,2,16,43,3

A research article reports that clients who received Intervention A had a 30% recidivism rate,while clients who received Intervention B had a 40% recidivism rate.What can be inferred from these statistics?

Items 7 through 9 refer to the table below: -If the table were collapsed into a bivariate table with only two rows and two columns,deleting the type of illness variable,recipients of social work services would appear to be more likely to die in the hospital.

Given the following values,the median is 8,12,9,15,17,11,13,14,7

Suppose a study reports that the average number of times that control group participants got drunk during the year was five.What is appropriate to conclude?

The most frequent attribute,in either grouped or ungrouped data,is the

A Cohen's d effect size of less than 1.0 is considered to be weak.

Your colleague conducts a methodologically flawless randomized experiment with a small sample and finds that 70 percent of the clients treated with intervention A had a successful outcome,while only 60 percent of the clients in the control group had a successful outcome.Based on the difference in these percentages,she concludes that intervention A is effective.Would you agree with her? Explain your answer.

Suppose 100 clients referred for substance abuse problems receive new Intervention A and another receive treatment as usual (TAU).Suppose further that 20% of the recipients of Intervention A recidivate as compared to 50% of the TAU recipients.The odds ratio would be:

Interpret the following frequency distribution portraying client responses to the question,"How satisfied are you with the services you've received from this agency?" Satisfaction Level f Very satisfied 60 Moderately satisfied 50 Slightly satisfied 40 Slightly dissatisfied 40 Moderately dissatisfied 50 Very dissatisfied 60 No Answer 20 44

Items 7 through 9 refer to the table below: -The table shows that regardless of type of illness,recipients of social work services were more likely to die in the hospital.

Half the cases are above the median and half the cases are below the median.

An experiment evaluating the effectiveness of an intervention for improving attitudes about something finds that the mean posttest score of the experimental group is 70, which is better than the control group’s mean posttest score of 65. The significance level is .05, and the p value is .01. The standard deviation is 5. -The results are statistically significant.

The odds ratio shows how much more or less likely a certain dependent variable outcome is for the categories of the independent variable.

Given the following age distribution,the mean is 18,33,7,32,6,5,4