exam Maths Puzzle Numerical Ability

AM PM
1 0
1 0
3 3
2 1
1 1
3 0
3 1
1 0
1 0
3 3
3 2
Calculate and report the mean, median, and mode of the data above.
Now calculate the standard deviation o

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exam Other Question

Solve the system by addition

5x-4y=-5
x-2y=-7

Please help solve this
How do we square trinomials?