QUESTIONS - Use this picture for the questions below.
Q1. Which of the following Pearson correlation coefficients best describes the above scatter plot?
+.30
-.55
+.97
-1.00
Q2. Calculate the r2 for the correlational coefficient .78.
Q3. Briefly describe what the r2 statistic represents.
Q4. How many subjects provided data for this correlational matrix?
Q5. Which variable has the strongest relationship to academic self-esteem?
Q6. Explain what the correlation between general self-esteem and reading achievement means to a person with no statistical background.
Q7. The critical value for a one-tailed t-test using an alpha level of .01 with 22 degrees of freedom is
2.508
2.819
2.518
2.831
Use the question below to answer the following questions.
A track roach is interested in determining if her training in the long jump is effective in helping her students lengthen their jumps. Two groups of nine 6th grade students are compared on their long jump scores. One group received the coach's training while the other group did not. Answer the coach's question by analyzing the following data using an alpha = .05. Include
|
Students without training
|
Students with training
|
|
12
|
14
|
|
13
|
17
|
|
11
|
19
|
|
15
|
10
|
|
22
|
20
|
|
16
|
20
|
|
9
|
11
|
|
14
|
14
|
|
7
|
16
|
Q8. What is the M1?
Q9. What is the M2?
Q10. What is the s2?
Q11. What is the SEm1?
Q12 .What is the SMe2?
Q13. How many total subjects were involved in the study?
Q14. What was the t-value?
Q15. How would you write up these results in a sentence?
Attachment:- Assignment File.rar