HomeworkLib
Question

A researcher measures the relationship between the number of interruptions during a class and time spent...

  • A researcher measures the relationship between the number of interruptions during a class and time spent "on task" (in minutes). Answer the following questions based on the results provided.
    Number of
    Interruptions    		 Time Spent "On Task"
    9 17
    3 40
    6 19
    2

    31
  • Compute the Pearson correlation coefficient. (Round your answer to three decimal places.)

  • Multiply each measurement of interruptions times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.)
  • Divide each measurement in half for time spent "on task" and recalculate the correlation coefficient. (Round your answer to three decimal places.)
math   Statistics-And-Probability   
0 0
Add a comment Improve this question Transcribed image text
Next > < Previous
Sort answers by oldest

Homework Answers

Answer #1

Pearson correlation coefficient doesn't change with the change of scale. Hence,

a) Pearson correlation coefficient

= correl(Interruptions, Time spent) [Excel Formula]

= -0.841

b) Pearson correlation coefficient = -0.841

c) Pearson correlation coefficient = -0.841

0 0
Add a comment
Know the answer?
Add Answer to:
A researcher measures the relationship between the number of interruptions during a class and time spent...
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. Our experts will answer your question WITHIN MINUTES for Free.
Similar Homework Help Questions

  • A researcher measures the relationship between the number of interruptions during a class and time spent...

    A researcher measures the relationship between the number of interruptions during a class and time spent "on task" (in minutes). Answer the following questions based on the results provided. Number of Interruptions Time Spent "On Task" 11 15 5 40 9 18 4 31 Part (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) Part (b) Multiply each measurement of interruptions times 3 and recalculate the correlation coefficient. (Round your answer to three decimal places.) Part...

  • A researcher measures the relationship between the number of interruption during a case and time spent...

    A researcher measures the relationship between the number of interruption during a case and time spent on task in minutes). Answer the following questions based on the results provided 11 6 10 12 5 30 Part Compute the Pearson correlation coefficient (Round your awer to three decimal places) Part Multiply each measurement of interruption times 3 and recalculate the correlation coefficient Round your answer to the decimal places) Part Divide each measurement in half for time spent on task and...

  • GMy Notes Ask Your Teacher 5 1/4 points Previous Answers PriviteraStats3 15.E.019. A researcher measures the...

    GMy Notes Ask Your Teacher 5 1/4 points Previous Answers PriviteraStats3 15.E.019. A researcher measures the relationship between the number of interruptions during a class and time spent "on task" (in minutes). Answer the following questions based on the results provided. Number of Interruptions Time Spent "On Task 10 15 38 29 Part (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) Part (b) Multiply each measurement of interruptions times 3 and recalculate the correlation coefficient....

  • A reseearcher measures the relationship between sleep medication use and time spent working. andwe the following...

    A reseearcher measures the relationship between sleep medication use and time spent working. andwe the following wuestioms based on the results provided. 9 18 5 38 7 19 3 29 A researcher measures the relationship between sleep medication use (times used per week) and time spent working (in hours per week). Answer the following questions based on the results provided. Sleep Medication Use Time Spent Working 18 Part(a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places...

  • A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in...

    A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study. Social Interaction Internet Use Y X 4 8 7 4 6 7 12 7 3 6 1 11 10 2 (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) (b) Compute the coefficient determination. (Round your answer to three decimal places.) (c) Using...

  • A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...

    A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study. Internet Use Social Interaction X Y 6 3 8 6 6 6 7 6 13 4 5 6 4 2 7 4 1 10 11 4 (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) (b) Compute the coefficient of determination. (Round your...

  • A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per...

    A researcher measures the relationship between Internet use (hours per week) and social interaction (hours per week) in a sample of 10 students. The following table lists the hypothetical results of this study 2 4 7 5 7 6 12 4 4 6 4 3 5 5 2 10 3 (a) Compute the Pearson correlation coefficient. (Round your answer to three decimal places.) (b) Compute the coefficient of determination. (Round your answer to three decimal places) (c) Using a two-tailed...

  • Data is collected on the relationship between time spent playing video games and time spent with...

    Data is collected on the relationship between time spent playing video games and time spent with family. The data is shown in the table and the line of best fit for the data is y^=−0.93x+89. Assume the line of best fit is significant and there is a strong linear relationship between the variables. Video Games (Minutes)   Time with Family (Minutes) 30 60 45 50 60 30 75 20 According to the line of best fit, what would be the predicted...

  • A researcher studied the relationship between the number of siblings (X) and intelligence (Y). The researcher...

    A researcher studied the relationship between the number of siblings (X) and intelligence (Y). The researcher reported the following results of calculations: ∑[(X –Mx) (Y –MY)] = 100; SDx = 20; SDY = 20; SSX = 100; SSY = 100. What is the value of the Pearson correlation coefficient?

  • Data is collected on the relationship between time spent playing video games and time spent with...

    Data is collected on the relationship between time spent playing video games and time spent with family. The data is shown in the table and the line of best fit for the data is ŷ =−0.57x+102.67. Assume the line of best fit is significant and there is a strong linear relationship between the variables. Video Games (Minutes) Time with Family (Minutes) 40 80 55 72 70 62 85 55 According to the line of best fit, what would be the...

ADVERTISEMENT
Free Homework Help App
Download From Google Play
Scan Your Homework
to Get Instant Free Answers
Need Online Homework Help?
Ask a Question
Get Answers For Free
Most questions answered within 3 hours.
ADVERTISEMENT
ADVERTISEMENT