I need help with this assignment statistics assignment .

Part I: Estimating Correlation Coefficients Visual inspection of data is a very important step in data analysis. Researchers use scatter diagrams to show the relationship between two variables. In this assignment, you will use the \"eyeball method\" to estimate the direction and magnitude of relationship between two variables. Directions Examine scatter diagrams AE: Answer the following questions and enter your responses on the answer sheet provided. 1. Which of the scatter diagrams depicts a positive correlation between aggression and viewing of violent television programs (there may be more than one; list all that apply)? Explain the meaning of this finding. 2. Which of the scatter diagrams depicts a negative correlation between aggression and viewing of violent television programs (there may be more than one; list all that apply)? Explain the meaning of this finding. 3. Which of the scatter diagrams depicts no relationship between aggression and viewing of violent television programs (there may be more than one; list all that apply)? Explain the meaning of this finding. 4. Which of the scatter diagrams depicts the strongest relationship between aggression and viewing of violent television programs? Briefly explain your answer. 5. Based on your prior knowledge of the relationship between aggression and viewing of violent television programs, which scatter diagram do you think most accurately depicts this relationship? Explain. Part II: Explaining Reliability Coefficients In this assignment, you are presented six minicase studies in which the researcher must ensure his or her work produces reliable results. Your task is to identify and describe the method of estimating reliability the researcher must use. This is a good way to learn about the information each reliability method provides, as well as sources of error examined by each method. Directions Read and study each of the following minicases: Case A A research group was asked to provide a test publisher with the internal consistency reliability coefficient for a 100item, dichotomouslyscored (correct/incorrect) measure of intelligence they created. Case B Dr. Bates is using a published behavioral rating scale in her research on children's social aggression on the playground. She has four research assistants who will spend approximately 50 hours each observing and recording the children's behavior, using the rating scale. Dr. Bates wants to make sure the research assistants are recording and scoring the children's behavior in the same way. Case C Researchers who developed a measure of optimism wants to show that their test measures a stable personality characteristic that changes very little over time. Case D Dr. Ludlow is interested in gathering reliability data for a creativity test he recently developed. Items on the test were scored from 1 to 5, with 5 indicating a very creative response and 1 indicating a noncreative response. Dr. Ludlow's primary interest is whether all the items on the test measure the same thing. Case E Dr. Gladeau is approached by a teacher in the local public school system who asks him to help her with a problem. Specifically the teacher states that she teaches two different third grade math classes and uses different unit tests in each. \"I need to provide evidence that my two math tests are measuring the same thing - that even though the items themselves are different, the tests are functionally the same.\" Case F Dr. Veverka is interested in whether the items on her 50item multiplechoice exam are of similar difficulty, or whether they increase in difficulty. For each minicase, answer the following questions and enter your responses on the answer sheet provided. 1. Identify the method of estimating reliability the researcher should use. 2. Describe the actions that must be taken to find the reliability coefficient. 3. Describe the information that is provided by the reliability coefficient, including sources of error. Assignment Grading Criteria This assignment will be graded on the following criteria. Part I: Estimating Correlation Coefficients 1. 1. Positive Correlation: Correctly identifies the scatter diagram(s) depicting a positive correlation and accurately explains the nature of the relationships represented. 2. Negative Correlation: Correctly identifies the scatter diagram(s) depicting a negative correlation and accurately explains the nature of the relationships represented. 3. No Relationship: Correctly identifies the scatter diagram(s) depicting no correlation and accurately explains the nature of the relationships represented. 4. Strongest Relationship: Correctly identifies the scatter diagram(s) depicting the strongest relationship(s) amongst the variables and explains their relevance. 5. Accurate Analysis: Relying on the data provided in the scatter plots, provide a clearly communicated analysis of which represents an accurate relationship between the variables. Mini Cases AE: For each case, accurately identified: 2. 1. the method for estimating reliability required for the testing described 2. The action/procedures required to achieve the reliability assessment 3. The information output the reliability estimate procedure provides 4. The sources of error that can occur with the selected reliability estimate Estimating Correlation Coefficients and Explaining Reliability Coefficients Answer Sheet Items Scatter Diagram Explanation Positive correlation Negative correlation No relationship Strongest relationship Accurate Case A B C D E F Reliability Method Action Necessary Information Provided and Sources of Error