Answer:
Mean : 79/15 or about 5.27
Median : 5
Mode : 9
Range : 8
Explanation:
To make this easy lets first list the data points
We have 1 , 2 , 2 , 3 , 4 , 4 , 5 , 5 , 6 , 6 , 7 , 7 , 9 , 9 , 9
Now lets find each data value
First the mean
Mean = average which = sum of data points / # of data points
Sum of data points = 1 + 2 + 2 + 3 + 4 + 4 + 5 + 5 + 6 + 6 + 7 + 7 + 9 + 9 + 9 = 79
# of data points ( count the number of dots ) = 15
So average (mean) = 79/15 or about 5.27
Next lets find the median.
The median is the middle value.
We can find the median by listing the values and then meeting at the middle of the values
So we have 1 , 2 , 2 , 3 , 4 , 4 , 5 , 5 , 6 , 6 , 7 , 7 , 9 , 9 , 9
If you go to the very middle, 5 is the middle value so median = 5
Next lets find mode
Mode is simply the value that appears most.
The value that appears the most is 9 as it appears three times which is the most out of any other value
Finally lets find the range.
Range = Largest number - Smallest number
Largest number = 9
Smallest number = 1
Range = 9 - 1 = 8