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Example:
First four multiples of 2
1, 2, 3, 4
2, 4, 5, 10
2, 4, 6, 8
Example: Find the median of the following: 1, 2, 1, 5, 5
Step 1: Sort the list → 1, 1, 2, 5, 5
Step 2: Count of numbers listed → 5 (odd)
Step 3: So the middle number is (count+1)/2 → (5+1)/2 → 3rd number. Therefore, the median is 2.
Step 1: Sort the list → 1, 1, 2, 5, 5
Step 2: Count of numbers listed → 5 (odd)
Step 3: So the middle number is (count+1)/2 → (5+1)/2 → 3rd number. Therefore, the median is 2.
Example:
line segment XY
line segment YX
line XY
Example:
-4
-2
2
-2
-1
Example:
red ball to blue balls
3:2
2:1
3:5
2:5
Example: Find the mean of the following: 1, 2, 3, 4, 5
Step 1: Find the sum of all numbers → 1+2+3+4+5 = 15
Step 2: Divide total by the number of numbers → 15 ÷ 5 = 3
Step 1: Find the sum of all numbers → 1+2+3+4+5 = 15
Step 2: Divide total by the number of numbers → 15 ÷ 5 = 3
Example: 4
5
Example:
-4 - -2 =
-2
Example:
-4
-2
2
Example:
What are the factors of 82?
2
9
41
28
Example: 22
4
22
2
Example: Rails in a railway track
perpendicular
parallel
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