Question

11. The following table shows the class size and the average test score Class Size 15...

11. The following table shows the class size and the average test score

Class Size 15 17 18 20 21 24 26 29
Average Test score 85 86 85 82 80 78 75 72



Calculate:
                Coefficient of correlation ( r )





                Coefficient of determination (r2)







                Slope of the regression line







                Intercept of the regression line





                Equation of the regression line







                Predicted value of test score for class size = 22

Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
Mid Score Final Score 80 78 87 85 72 81 69 54 86 70 83 73...
Mid Score Final Score 80 78 87 85 72 81 69 54 86 70 83 73 78 89 75 84 74 86 75 79 84 75 73 63 74 72 73 69 80 86 75 78 72 75 77 68 76 77 66 78 74 77 71 73 85 79 74 74 76 79 76 73 84 72 77 81 78 86 86 76 81 83 78 83 85 86 73 71 83 83 83 79 72 68 83 90...
# 6 The table below shows a measure of the “liberalness” of various American cities and...
# 6 The table below shows a measure of the “liberalness” of various American cities and a measure of the corresponding asking price per square foot for housing. Liberalness 1 0 6 7 10 15 16 19 22 25 26 30 Price 2 3 2 2 0 7 6 8 7 8 4 16 Enter the slope and y-intercept of the regression line, using liberalness as the independent variable. Round your answers to two decimal places. Slope:         Intercept: Enter the correlation...
The table below shows the average amounts spent per week by men and women In each...
The table below shows the average amounts spent per week by men and women In each of four spending categories: A B C D Men $54 $27 $105 $22 Women $21 $85 $100 $75 What method provides the best descriptive graph? 1. Pie chart 2. Bar chart 3. Side by side bar charts 4. Two pie charts The first step in the solution of a simple regression problem is to : a. Calculate the mean of the independent variable, the...
Based on the class size and average achievement scores for the five elementary schools in this...
Based on the class size and average achievement scores for the five elementary schools in this table, a) calculate the correlation coefficient, r; b) write whether r is positive or negative and strong or weak, c) interpret the correlation, and d) calculate and interpret the coefficient of determination. (Hint: For class size, s = 7.31; for achievement, s = 18.22.) School Class Size Test Score Main St. 25 80 Casat 14 98 Lakeland 33 50 Shady Grove 28 82 Jefferson...
Daughter's Performance on a Stanardized Math Test Mother's Performance on a Stanardized Math Test Father's Performance...
Daughter's Performance on a Stanardized Math Test Mother's Performance on a Stanardized Math Test Father's Performance on a Stanardized Math Test 84 90 72 65 70 85 91 86 81 75 82 83 81 84 84 79 93 72 83 72 70 92 90 88 61 74 68 73 60 82 85 83 72 90 93 94 54 64 69 70 78 62 Daughter -Mother Correlation: Instructions: Indicate the correlation between daughters and mothers' scores on the standardized math test...
Question 1: Table 1 shows the number of customers visited by a salesman over an 80-week...
Question 1: Table 1 shows the number of customers visited by a salesman over an 80-week period. Table 1: Customers Visited Over an 80-Week Period 68 64 75 82 68 60 62 88 76 93 73 79 88 73 60 93 71 59 85 75 61 65 75 87 74 62 95 78 63 72 66 78 82 75 94 77 69 74 68 60 96 78 89 61 75 95 60 79 83 71 79 62 67 97 78...
The following information shows the temperature (in Fahrenheit) outside and the number of students that go...
The following information shows the temperature (in Fahrenheit) outside and the number of students that go to class. Show your work to receive credit. Temperature x 47 75 72 51 39 60 68 Students that go to class y 24 35 37 28 22 30 32 a) Compute the value of the correlation coefficient r.            b) Find the equation of the regression line.
A random sample of 9 biology students produced the following data, first test Score, x second...
A random sample of 9 biology students produced the following data, first test Score, x second test Score, y 22 30 53 37 67 10 69 38 68 21 91 82 98 28 46 36 16 27 where x measures the first test score and y measures the second test score. What is the estimate of the y = a x + b regression slope coefficient?
A chemistry class had two tests. On the first test the mean score was 70 with...
A chemistry class had two tests. On the first test the mean score was 70 with a standard deviation of 10. On the second test the mean score was 60 with a standard deviation of 15. The correlation coefficient between the scores of the two tests was r = 0.6. We run a regression analysis with the first test score as the independent variable and the second test score as the dependent variable. We use the result to estimate the...
In the simple linear regression model estimate Y = b0 + b1X A. Y - estimated...
In the simple linear regression model estimate Y = b0 + b1X A. Y - estimated average predicted value, X – predictor, Y-intercept (b1), slope (b0) B. Y - estimated average predicted value, X – predictor, Y-intercept (b0), slope (b1) C. X - estimated average predicted value, Y – predictor, Y-intercept (b1), slope (b0) D. X - estimated average predicted value, Y – predictor, Y-intercept (b0), slope (b1) The slope (b1) represents A. the estimated average change in Y per...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT