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Using r create a 4×3×4 array where for each of the 3 students, a 4×3 matrix holds their six scores and six averages (i.e., two averages by scores, three averages by subject, and the grand average). The last (i.e., 21st) matrix should hold the elementwise averages of the previous 20 matrices. Do not use a loop. Ini A1 A2 B1 B2 C1 C2 RE 81.9 75.1 78.3 69.2 79.6 74.4 ON 82.7 72.6 85.3 78.9 78.3 75.7    KS 83.8 63.4 73.4 73.5 80.4 66.2 Ini is the student's initials, A1 is subject 1 first, A2 is subject 1 second, etc.

Using r create a 4×3×4 array where for each of the 3 students, a 4×3 matrix holds their six scores and six averages (i.e., two averages by scores, three averages by subject, and the grand average). The last (i.e., 21st) matrix should hold the elementwise averages of the previous 20 matrices. Do not use a loop. Ini A1 A2 B1 B2 C1 C2 RE 81.9 75.1 78.3 69.2 79.6 74.4 ON 82.7 72.6 85.3 78.9 78.3 75.7    KS 83.8 63.4 73.4 73.5 80.4 66.2 Ini is the student's initials, A1 is subject 1 first, A2 is subject 1 second, etc.

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
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Using r create a 4×3×4 array where for each of the 3 students, a 4×3 matrix holds their six scores and six averages (i.e., two averages by scores, three averages by subject, and the grand average). The last (i.e., 21st) matrix should hold the elementwise averages of the previous 20 matrices. Do not use a loop.

Ini A1 A2 B1 B2 C1 C2

RE 81.9 75.1 78.3 69.2 79.6 74.4

ON 82.7 72.6 85.3 78.9 78.3 75.7   

KS 83.8 63.4 73.4 73.5 80.4 66.2

Ini is the student's initials, A1 is subject 1 first, A2 is subject 1 second, etc.

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