Range
the positive difference between the largest and smallest values in a data set
Eg.
range of 4,8,5,6,9,1,3,5,8,6 is
1,3,4,5,5,6,6,8,8,9
9-1 = 8
Eg.
range of 4,8,5,6,9,1,3,5,8,6 is
1,3,4,5,5,6,6,8,8,9
9-1 = 8
Friday, June 15, 2012
mode
Mode
The most frequently occurring number in a
set of data
mode and most both have 4 letters
Eg.
mode of 3,5,7,7,9 is 7
mode of 2,2,4,6,6,8,11 is 2 and 6
set of data
mode and most both have 4 letters
Eg.
mode of 3,5,7,7,9 is 7
mode of 2,2,4,6,6,8,11 is 2 and 6
Median
Median
The middle number in a set
of data after the data have been arranged in order
Eg.
median of 2,5,6,8,9 is 6
median of 1,3,6,8,9,10 is 7
of data after the data have been arranged in order
Eg.
median of 2,5,6,8,9 is 6
median of 1,3,6,8,9,10 is 7
Mean
Mean
A measure of central tendency
the sum of a set of values divided by the number of
values in the set
mean of 6,4,8 is
add up all the numbers and divide the results by how many numbers there are
6+4+8=18
18 divide it by 3 = 6
therefor the mean is 6
divisibility rules
1-all number
2-even numbers
3-sum is 3
4-divisible by 2 twice
5-end in 0 or 5
6-divisible by 2 or 3
8-divisible by 2 trice
9-end in 0
2-even numbers
3-sum is 3
4-divisible by 2 twice
5-end in 0 or 5
6-divisible by 2 or 3
8-divisible by 2 trice
9-end in 0
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