To find the mean of a set of data, add the data then divide it by the number of the data
Since the set of numbers is
{1, 1, 4, 8, 9, 3, 8}
There are 7 numbers, sum them and divide the answer by 7 to find the mean
[tex]\begin{gathered} \text{Mean}=\frac{1+1+4+8+9+3+8_{}}{7} \\ \text{Mean}=\frac{34}{7} \\ \text{Mean}=4.857142857 \end{gathered}[/tex]
Round it to the nearest tenth
Mean = 4.9
To find the median, arrange the data from smallest, then choose the middle one
to be the median
1, 1, 3, 4, 8, 8, 9
Since there are 7 numbers, then the middle one is the fourth number
Since the fourth number is 4
The median is 4
The range is the difference between the greatest and the smallest number
Since the greatest number is 9 and the smallest number is 1, then
The range = 9 - 1 = 8
The range is 8
