Statistics

In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their current stress level on a scale of 1 to 10. The table shows the survey results. Using a web-calculator, obtain the appropriate correlation coefficients.
Number of cups Stress level
3 5
2 3
4 3
6 9
5 4
1 2
7 10
3 5

Total Numbers: 8
Correlation: 0.8519

Did I answer this correctly?

asked by SHelia
  1. Yes, using http://easycalculation.com/statistics/correlation.php
    I get .8519

    posted by Damon
  2. Thank you for your help. I used that same webpage for help but I still wasn't sure that I was doing it correctly. Thanks for double checking.

    posted by SHelia
  3. Please note that stress variable can assume only two values high or low. Is it not nominal ? (You are told that this study was looking at the effects of stress (low or high) on consumption of caffeine).

    posted by sharon

Respond to this Question

First Name

Your Response

Similar Questions

  1. Statistics: Calculate a Pearson's r

    In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their stress level on a scale of 1 to 10. The data are provided in the following table. Number of Cups of Coffee 3, 2, 4,
  2. Statistics

    In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1 to 10. The date follow: Number of Cups of Coffee 3,2,4,6,5,1,7,3 Stress Level
  3. Stats

    1. In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1-10. The data appear below. Number of Cups of Coffee Stress Level 3 5 2 3 4 3 6 9 5 4
  4. statistics

    In a study of caffeine and stress, college students indicate how many cups of coffee they drink per day and their stress level on a scale of 1-10. The data appear below. Number of Cups of Coffee Stress Level 3 5 2 3 4 3 6 9 5 4 1
  5. statistics

    6. In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their current stress level on a scale of 1 to 10. The table shows the survey results. Using a web-calculator, obtain
  6. Statistics

    In a study on caffeine and stress, college students indicated how many cups of coffee they drink per day and their current stress level on a scale of 1 to 10. Obtain the appropriate correlation coefficents.
  7. Research and Statistics

    5. The table below shows Psychology exam scores, Statistics Exam scores, and IQ scores for a random sample of students. What can you observe in the relationship between IQ and psychology, psychology and statistics, and IQ and
  8. Statistics: Percentile Rank

    A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. A. What
  9. statistics

    A survey of college students was conducted during final exam week to assess the number of cups of coffee consumed each day. The mean number of cups was 5 with a standard deviation of 1.5 cups. The distribution was normal. a. What
  10. statistics

    4. Suppose you administered an anxiety test to a large sample of people and obtained normally distributed scores with a mean of 45 and standard deviation of 4. Do not use web-calculator to answer the following questions. Instead,

More Similar Questions