Question
1. A) Make a vector called v1 that contains all multiples of 3 from 18 to 180. B) Compute the sum of the elements in
1.
A) Make a vector called v1 that contains all multiples of 3 from 18 to 180.
B) Compute the sum of the elements in v1.
C) Compute the average (mean) of the elements in v1.
R code here:
2.
A) Make a vector containing the integers from 1000 to 1 (decreasing), give it the name w.
B) Using w, make a vector w2 that only contains those elements of w that are NOT a multiple of 7.
C) Using w or w2, make a vector w3 that only contains those elements of w that are NEITHER a multiple of 7 or 9.
R code here:
3.
A) Make a vector p1 that contains the first 20 powers of 2 (2, 4, 8 etc.).
B) Make a vector p2 that contains the first 20 squares (1, 4, 9 etc.).
C) Make a 2-by-10 matrix (2 rows, 10 columns) whose first row is p1 and the second row is p2.
D) Make a 10-by-3 matrix whose first column is p1, the second column is p2 and the third column is all 0.
R code here:
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