Question

The following data were collected to study a relationship between time spent for training and an...

The following data were collected to study a relationship between time spent for training and an aptitude test score. (X = months spent for training, Y = test score).

X

1

3

5.5

2

3.5

5

6

7

Y

2.5

4.5

6.7

3.5

4

5.2

6.5

6.8

  1. Plot the data on a scatter diagram. Does it suggest positive/negative relationship?
  2. Find the sample correlation coefficient and test its significance.
  3. Write an equation of the regreesion line.
  4. Estimate the value of the test score corresponding to X = 4 months.
Math   Statistics-And-Probability   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

any query, please ask...if helpful rate positive

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
The following data gives the number of hours 10 students spent studying and their corresponding grades...
The following data gives the number of hours 10 students spent studying and their corresponding grades on their exams. Hours Spent Studying 0.5 1 1.5 2 2.5 3 4.5 5 5.5 6 Grades 60 63 69 72 75 78 87 93 96 99 Step 1 of 3: Draw a scatter plot of the given data. 2 of 3: Estimate the correlation in words: positive, negative, no correlation. Step 3 of 3: Calculate the correlation coefficient, r. Round your answer to...
The following data gives the number of hours 10 students spent studying and their corresponding grades...
The following data gives the number of hours 10 students spent studying and their corresponding grades on their exams. Hours Spent Studying 0 0.5 1.5 2.5 3 3.5 4 4.5 5 5.5 Grades 60 66 69 75 78 81 84 90 93 96 Copy Data Step 2 of 3: Estimate the correlation in words: positive, negative, no correlation. Calculate the correlation coefficient, r. Round your answer to three decimal places.
Simple regression analysis The following data were collected to study the relationship between the sale price,...
Simple regression analysis The following data were collected to study the relationship between the sale price, y and the total appraised value, x, of a residential property located in an upscale neighborhood. Property x y x2 y2 xy 1 2 2 4 4 4 2 3 5 9 25 15 3 4 7 16 49 28 4 5 10 25 100 50 5 6 11 36 121 66 Draw a scatter diagram of the sale price and the total appraised...
The following data gives the number of hours 10 students spent studying and their corresponding grades...
The following data gives the number of hours 10 students spent studying and their corresponding grades on their midterm exams. Calculate the correlation coefficient, r. Round your answer to three decimal places. Hours Spent Studying 0.5 1.5 2 2.5 3 3.5 4 4.5 5 5.5 Midterm Grades 63 66 69 72 75 81 84 90 96 99
In a study of whether a relationship exists between a child’s aptitude and the age at...
In a study of whether a relationship exists between a child’s aptitude and the age at which he/she first speaks, researchers collected a random sample of 150 children and recorded the age (in months) of a child’s first speech (x variable) and the child’s score on an aptitude test (y-variable) The data were then used to create a regression equation in which the slope was calculated to be -1.25 and the y-intercept was calculated to be 109. What would you...
The following data gives the number of hours 7 students spent studying and their corresponding grades...
The following data gives the number of hours 7 students spent studying and their corresponding grades on their midterm exams. Hours Spent Studying (x) 0.5 1 2.5 3 4 5 5.5 Midterm Grades (y) 66 69 75 78 90 93 96 Determine the correlation between hours spent studying and midterm grades. a) positive correlation b) negative correlation c) no correlation
A farmer assumes that there is a linear relationship between the amount of fertilizers supplied to...
A farmer assumes that there is a linear relationship between the amount of fertilizers supplied to potato plants and the subsequent yield of potatoes obtained. eight potato plants, of the same variety, were selected at random and treated, weekly, with a solution in which x grams of fertilizer was dissolved in a fixed quantity of water. The yield, y kilograms, of potatoes was recorded. Plant A B C D E F G H x 1.0 1.5 2.0 2.5 3.0 3.5...
The following data gives the number of hours 77 students spent studying and their corresponding grades...
The following data gives the number of hours 77 students spent studying and their corresponding grades on their midterm exams. Hours Spent Studying 0.5 1 2.5 4 4.5 5.5 6 Midterm Grades 60 63 72 81 84 90 99 Copy Data Step 1 of 3 :   Calculate the correlation coefficient, r. Round your answer to six decimal places.
The following data gives the number of hours 10 10 students spent studying and their corresponding...
The following data gives the number of hours 10 10 students spent studying and their corresponding grades on their midterm exams. Hours Spent Studying 0.5 0.5 1 1 1.5 1.5 2.5 2.5 3 3 3.5 3.5 4 4 4.5 4.5 5 5 6 6 Midterm Grades 66 66 72 72 75 75 78 78 81 81 87 87 90 90 93 93 96 96 99 99 Copy DataHours Spent Studying Midterm Grades 0.5 66 1 72 1.5 75 2.5 78...
The following data gives the number of hours 7 students spent studying and their corresponding grades...
The following data gives the number of hours 7 students spent studying and their corresponding grades on their midterm exams. Hours Spent Studying 0.5 1 1.5 2.5 3.5 4 4.5 Midterm Grades 69 72 75 81 84 90 96 Copy Data Step 1 of 3 :   Calculate the correlation coefficient, r. Round your answer to six decimal places.
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT