Dear student, please post the question one at a time.
1) Chi-square test should be used.
The Chi-Square statistic is commonly used for testing relationships between categorical variables.
1. A researcher wants to determine if there is a relationship between number of classes students...
For the following, determine what test to run. These answers include more than correlations and t-tests. A researcher wants to know if there is a relationship between whether or not a community has a neighborhood watch program (where residents walk the streets of the neighborhood) or not, and its rate of violent crimes over the past 12 months. What test would be used to assess this relationship? 2. Another researcher is also interested in the effectiveness of neighborhood watch programs...
A researcher studied the relationship between students' attitudes toward graphs and their performance in a statistics course. For a sample of students, data were collected on the following variables: . Tests (average number of questions answered correctly) Attitudes toward Graphs (o student thinks that graphs used in the course did not contribute to his or her learning: 1-graphs contributed to learning) Gender (0 = male, 1 = female) Academic Major (1 = business, 2 = liberal arts, 3-science and mathematics;...
1 A researcher wants to find out which type of classroom instruction significantly improves students’ test performance. He designed four types of instruction for four samples of students. Later all four samples were given the same test and their average performance was compared. What statistical test should be used by the researcher to analyze the results of this study? A. Pearson correlation B. t-test for independent groups C. one-factor Anova for between groups D. Chi2 for Independence 2 A researcher...
A researcher wants to determine whether high school students who attend an SAT preparation course score significantly different on the SAT than students who do not attend the preparation course. For those who do not attend the course, the population mean is 1050 (? = 1050). The 16 students who attend the preparation course average 1200on the SAT, with a sample standard deviation of 100. On the basis of these data, can the researcher conclude that the preparation course has...
Problem Set 1: A researcher wanted to examine if there is a relationship between one’s general self concept and self concept of intimate relationships. In this study, 80 participants completed self-reflections on both concepts using ratio-based inventories, where higher numbers indicate higher self esteem generally, and better abilities in sustaining intimate relationships, respectively. The variables are named “GENERAL” and “INTIMATE” in the “Week 7 Data Set” SPSS data file used in the previous section. What appropriate test would you use...
Please double check answers I asked already recieved the wrong info. Question 6 A researcher wants to determine if preschool attendance is associated with Select one answer high school graduation for low-income students. She randomly assigns low- points income children to two groups; one group will attend preschool program, the second group will not attend preschool. The researcher plans to follow the children in the study for 20 years and observe whether or not they graduate from high school. Which...
Research question #3. Does the quality of therapist-client relationship affect the change of the scores from pre-test to post-test among juveniles? (13 points) SPSS Dataset SPSS Data for HW (500 cases).sav (available in Canvas) change: Change of the scores from pretest to posttest (measured by points) qual: Quality of therapist-client relationship (measured by points) Variable Names in the dataset 1. What are the dependent variable (DV) and independent variable (IV)? (1 point) 2. State the research hypothesis (non-directional) and the...
aper A snm PSsda 22, 2019 Chapter 1: Levels of Measurement in SPSS 1. In addition to planning what, whom, when, and how to observe, what else researchers plan before conducting their research? 2. "The level of measurement is a primary consideration researchers use when choosing statistical methods for analyzing a given set of data." The preceding statement is: a. True b. False. 3. Country of origin measured by grouping individuals into categories such as Born in the United States,...
Save Answer Question 1 50 points 1. A researcher wants to evaluate the learning ability of college students with various background sounds during learning. She randomly divides 21 participants into three groups of 7. All students study a passage of text for 30 minutes. Those in group 1 study with background sound at a constant volume in the background. Those in group 2 study with noise that changes volume randomly. Those in group 3 study with no sound at all....
1. A researcher was interested in whether there was a relationship between stress and depression scores obtained from emergency health care providers. The data from 10 emergency workers are below. Stress Depression 38 26 28 16 42 34 18 22 26 15 45 24 32 18 26 18 22 12 33 15 Stress M = 31 , SD = 8.25 Depression M = 20, SD = 6.24 By hand, calculate the correlation coefficient. You are given the mean and standard...