Suppose a researcher is interested in predicting anxiety level based on the amount of the number of hours worked in a day. Data collected from 5 college students is shown below. Be sure to label your answers with the appropriate letter and show all your work (each mathematical step) for each answer. Hours (X) Anxiety (Y) 8 6 7 7 9 9 8 6 8 10 a) Calculate the covariance between the two variables. Hint: The mean of X (Hours) is 7.4. You'll need to then start by calculating the mean of Y (Anxiety). b) Calculate the standard deviation of the X variable. The standard deviation of Y is 1.48. c) Calculate and INTERPRET the correlation between the variables.

Suppose a researcher is interested in predicting anxiety level based on the amount of the number of hours worked in a day. Data collected from 5 college students is shown below. Be sure to label your answers with the appropriate letter and show all your work (each mathematical step) for each answer. Hours (X) Anxiety (Y) 8 6 7 7 9 9 8 6 8 10 a) Calculate the covariance between the two variables. Hint: The mean of X (Hours) is 7.4. You'll need to then start by calculating the mean of Y (Anxiety). b) Calculate the standard deviation of the X variable. The standard deviation of Y is 1.48. c) Calculate and INTERPRET the correlation between the variables.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

18th Edition

ISBN:9780079039897

Author:Carter

Publisher:Carter

Chapter4: Equations Of Linear Functions

Section4.5: Correlation And Causation

Problem 2AGP

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