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Mean, Mode,Median and Range
Contributed by: O'Kane
MODE THE MOST COMMON 
5 IS THE MODE
3     5     5     6     7
MEDIAN THE MIDDLE VALUE 
7 IS THE MEDIAN
2     5     7     7     9
THESE ARE IN ORDER
MEDIAN THE MIDDLE VALUE 
IN ORDER
4 IS THE MEDIAN
6   2   1    6    4
1   2   4   6   6
THESE ARE NOT IN ORDER
MEAN  
STEP 1     FIND THE TOTAL
STEP 2   DIVIDE THE TOTAL BY HOW MANY NUMBERS
STEP 1  TOTAL = 2+5+7+6 =20
STEP 2  20 / 4 = 5
2     5     7     6
Biggest take away
smallest
Range = 6 - 1 = 5
3   5   1   6
Range
3
What is the most common number ?
4
3
6
2
3
(The mode)
What is the middle number ?
1
2
3
5
7
10
(The median)
11
Subtract the smallest number
from the largest number
1
2
3
5
7
10
(The range)
11
mean =
1
To get the mean...
Divide total by how many numbers
answer total =
How many numbers are there?
What is the total of these number ?
answer 
3
3
÷
5
8
=
After you have put these numbers in order,
what is the middle number ?
(The median)
1
7
5
2
4
5
5
6
What is  the mode ?
4
2
4
4
7
9
5
6
What is  the modal value ?
4
2
7
7
7
What is the median of these numbers?
3
Hint : half way between the two middle values
4
6
8
9
9
What is the range of values?
23
5
7
3
6
14
Find the mean of 4 and 12
Find the mean, mode, median and range
 of these numbers
median =
mode =
4
4
8
9
mean =
range =
10
Frequency
What is the modal  grade?
A
B
C
D
E
Grades
Science
8
6
4
2
0
Pupils tests results in Maths and Science
2
4
Maths
What is the range of marks
for the Maths test?
6
8
10
12
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