WHAT IS MEAN? .gif)
It is obtained by dividing the sum of data by the number of observations.
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It is obtained by dividing the sum of data by the number of observations.The Formula is :
Sum of data / number of observation
The Formula is :
Thursday, January 14, 2010
So.....Let's start with an easy example
(a) Calculate the mean of the following set of numbers:
1, 2, 3, 4, 5
To do this, add up the numbers and divide by how many numbers you have (5 of them, in this case).
mean = (1 + 2 + 3 + 4 + 5)/5
= 15/5
= 3
Pretty easy, right? 
...Here's another example of calculating the mean.
EXAMPLE 1
Find the mean of the following set of integers.
8, 11, –6, 22, –3
Solution :
Mean = 8+11+(-6)+22+(-3)/5
= 6.4
EXAMPLE 2
The set of scores 12, 5, 7, -8, x, 10 has a mean of 5. Find the value of x.
Solution :
Mean = 12+5+7+(-8)+ x +10 / 6 = 5
26 + x = 30
x = 4
1. Find the mean for the following set of data.
15, 20, 80, 75, 5, 50
Answer: 245/6 = 40.83
2. Find the mean for the following set of data.
16, 40, 44, 16, 40, 40, 80, 17, 64, 64, 100
Answer: Mean - 521/47.36
3. Find the mean for the following set of data.
1000, 5100, 5025, 1, 100, 3275, 3275, 5, 10000, 1250
Answer: Mean - 29031/10 = 2903.1
THIS VIDEO IT'S ALL ABOUT
' MEAN,MEDIAN AND MODE '
