Explore BrainMass

Explore BrainMass

    Analyzing a Linear Correlation between Two Variables

    Not what you're looking for? Search our solutions OR ask your own Custom question.

    This content was COPIED from BrainMass.com - View the original, and get the already-completed solution here!

    Question: Construct a scatter-plot, find the value of the linear correlation coefficient r, and find the critical values of r, using alpha = 0.05. Determine whether there is sufficient evidence to support a claim of a linear correlation between the two variables.

    Scenario: Crickets and temperature
    One classic application of correlation involves the association between the temperature and the number of times a cricket chirps in a minute. Listed below are the numbers of chirps in 1 minute and the corresponding temperatures in degree F. Is there a linear correlation between the number of chirps in 1 minute and the temperature?
    - chirps in 1 min: 882, 1188, 1104, 864, 1200, 1032, 960, 900
    - temperature (degree F) 69.7, 93.3, 84.3, 76.3, 88.6, 82.6, 71.6, 79.6

    © BrainMass Inc. brainmass.com March 5, 2021, 12:25 am ad1c9bdddf

    Solution Preview

    Hi, please find the solution attached. I hope it will help you to understand the topic.


    Correlation coefficient is given as

    chirps in 1 min temperature (degree F)
    chirps in 1 min 1
    temperature (degree F) 0.873679 1

    Here we want to ...

    Solution Summary

    The expert analyzes a linear correlation between two variables. Sufficient evidence to support a claim of a linear correlation between the two variables are determined.