Choose ALL the correct ways of findings the standard deviation of the data in column vectors A, B and C.

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
Problem 1PE
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Choose ALL the correct ways of findings the standard deviation of the
data in column vectors A, B and C.
O std([A B C)
O std([A; B; C))
O stdev([A B C)
std(A), std(B), std(C)
O stdev(A), stdev(B). stdev(C)
The following code creates a 5x5 matrix A. What is the maximum
possible number of occurrences of the number 4 in the elements of
matrix A?
A = zeros (5);
for k = 1:5
%3D
A(k,:)
randi (k, [1, 51);
end
0 4
O 5
O 10
O 25
O 12
Next»
Transcribed Image Text:Choose ALL the correct ways of findings the standard deviation of the data in column vectors A, B and C. O std([A B C) O std([A; B; C)) O stdev([A B C) std(A), std(B), std(C) O stdev(A), stdev(B). stdev(C) The following code creates a 5x5 matrix A. What is the maximum possible number of occurrences of the number 4 in the elements of matrix A? A = zeros (5); for k = 1:5 %3D A(k,:) randi (k, [1, 51); end 0 4 O 5 O 10 O 25 O 12 Next»
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