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A music teacher had noticed that some students went to pieces during exams. He wanted to test whether this performance anxiety was different for people playing different instruments. He took groups of guitarists. drummers and pianists (variable = 'Instru') and measured their anxiety (variable = 'Anxiety') during the exam. He also noted the type of exam they were performing (in the UK, musical instrument exams are known as 'grades' and range from 1 to 8 ). He wanted to see whether the type of instrument played affected performance anxiety when accounting for the grade of the exam. Which of the following statements best reflects what the effect of GRADE in the table tells us? Tests of Between-Subjects Effects a.
R
Squared
=.466
(Adjusted
R
Squared
=.438)
The grade of exam had a significant relationship with the level of anxiety experienced. The grade of exam did not have a significant relationship with the level of anxiety experienced. The type of instrument played had a significant relationship with the grade of exam that was being taken. The type of instrument played did not have a significant relationship with the grade of exam that was being taken.

Respuesta :

The statement that best reflects the grade is "The variances of anxiety scores were roughly the same in the different groups of musicians."

The term variances refers the mean squared difference between each data point and the center of the distribution measured by the mean

Here we have given that a music teacher had noticed that some students went to pieces during exams and he wanted to test whether this performance anxiety was different for people playing different instruments. While he took groups of guitarists. drummers and pianists (variable = 'Instru') and measured their anxiety (variable = 'Anxiety') during the exam. Here he also noted the type of exam they were performing (in the UK, musical instrument exams are known as 'grades' and range from 1 to 8 ).

Now, we need to find the statements best reflects what the effect of GRADE in the table tells us.

While we looking into he given question we have identified that this performance anxiety was different for people playing different instruments.

So, based on this concept the correct statement id option (c).

Because, here the variances of anxiety scores were roughly the same in the different groups of musicians where if Levine's test of equality of error variances is non-significant (sig > .05) then there is equality of variances.

To know more about Variance here

https://brainly.com/question/4688143

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