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 controlling for the grade of the exam. The SPSS output below shows the final tables. Which of the following statements best reflects what these tables tells us?
A) Guitarists were significantly less anxious than drummers, but were about as anxious as pianists, and drummers were about as anxious as pianists.
B) Guitarists were significantly less anxious than pianists and drummers, and drummers were significantly less anxious than pianists.
C) Guitarists, drummers and pianists were all about equally anxious.
D) Guitarists were significantly less anxious than pianists and drummers, and drummers were significantly more anxious than pianists.

Question

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 controlling for the grade of the exam. The SPSS output below shows the final tables. Which of the following statements best reflects what these tables tells us? 
A) Guitarists were significantly less anxious than drummers, but were about as anxious as pianists, and drummers were about as anxious as pianists. 
B) Guitarists were significantly less anxious than pianists and drummers, and drummers were significantly less anxious than pianists. 
C) Guitarists, drummers and pianists were all about equally anxious. 
D) Guitarists were significantly less anxious than pianists and drummers, and drummers were significantly more anxious than pianists.

Quizplus · Accepted Answer

The Answer of 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 controlling for the grade of the exam. The SPSS output below shows the final tables. Which of the following statements best reflects what these tables tells us? 
A) Guitarists were significantly less anxious than drummers, but were about as anxious as pianists, and drummers were about as anxious as pianists. 
B) Guitarists were significantly less anxious than pianists and drummers, and drummers were significantly less anxious than pianists. 
C) Guitarists, drummers and pianists were all about equally anxious. 
D) Guitarists were significantly less anxious than pianists and drummers, and drummers were significantly more anxious than pianists.

A Music Teacher Had Noticed That Some Students Went to Pieces