Convention: Tukey Quartiles
Count (N)
7
Sum (Σx)
63
Mean (x̄)
9
Median (Q2)
8
Mode
7
IQR (Q3-Q1)
5
Mean as Equal-Share / Balance Point (Fulcrum)
The fulcrum sits directly under the mean. Sum of distances to the left equals sum of distances to the right.
4
7
7
8
10
12
15
x̄ = 9
0917
Median Inward Pointer
4
7
7
8
10
12
15
Median is the middle value when sorted. Current Median = 8
Five-Number Summary (Box Plot)
IQR: 5
Min: 4
Q1: 7
Med: 8
Q3: 12
Max: 15
Frequency Histogram
Bin Width:2
1[4-6)
2[6-8)
1[8-10)
1[10-12)
1[12-14)
1[14-16)
🔗Connected Mathematical Concepts
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