Mode and Median
Minimum Maximum Range
Chapter 11
Section 1
Mode
Mode: the number that appears the most
Mode = Most
MO = MO
Finding Mode
Step 1: Put numbers in numerical order
Step 2: Identify the number that appears the most
Example
12 4 9 10 5 12 6 12
Step 1: 4 5 6 9 10 12 12 12
Step 2: 4 5 6 9 10 12 12 12
Mode = 12
Median
Median: the middle number when the numbers are
arranged from least to greatest
Median = Middle
Median = Middle
The median(middle) of a road.
Finding Median
Step 1: Put numbers in numerical order
Step 2: Identify the middle number by eliminating
numbers from front to back. If there is not a middle
number, add the two middle numbers and divide by two.
Example
12 4 9 10 5 12 6
Step 1: 4 5 6 9 10 12 12
Step 2: 4 5 6 9 10 12 12 Median = 9
Finding Median
Example
12 4 9 10 5 12 6 12
Step 1: 4 5 6 9 10 12 12 12
Step 2: 4 5 6 9 10 12 12 12
9 + 10
2 Median = 9.5
19 = 9.5
2
Examples……..
12 15 14 22 12 18 12
Mode
Step 1 12 12 12 14 15 18 22
Step 2 12 12 12 14 15 18 22
Mode = 12
Examples……..
12 15 14 22 12 18 12
Median
Step 1 12 12 12 14 15 18 22
Step 2 12 12 12 14 15 18 22
Median = 14
Examples……..
18 12 14 12 18 19 20 19
Mode
Step 1 12 12 14 18 18 19 19 20
Step 2 12 12 14 18 18 19 19 20
Mode = 12 18 19
Examples……..
18 12 14 12 18 19 20 19
Median
Step 1 12 12 14 18 18 19 19 20
Step 2 12 12 14 18 18 19 19 20
18 + 18
2
36 = 18
2
Vocabulary
Minimum: the least (lowest) number
Maximum: the greatest (highest) number
Range: the difference between the minimum and maximum
Example
1 5 9 1 2 5 8 2 7 2 2
Step 1: Put numbers in numerical order
1 1 2 2 2 2 5 5 7 8 9
Step 2: Identify the Minimum Step 3: Identify the Maximum
Step 4: Identify the Range ( maximum – minimum)
9 -1 = 8
3 2 4 3 6 6 6 9 1 8 4
___ ___ ___ ___ ___ ___ ___ ___ ___ ___ ___
Minimum:
Maximum:
Range:
Mean:
Median:
Mode: