Answer:
B. 12.5
Step-by-step explanation:
where the box ends on the left side is the 1st quartile.
Answer:
7x+28/5
Step-by-step explanation:
:)
Here, you know that 12 people answered.
Therefore :
Take the "M" for mean :


In short, you answer would be C. 3.5.Hope this helps !
Photon
Ryan is correct, the mean is about 8.1.
To find the mean, you have to add up all the values, then divide by the total amount.
For Sample A:
60 x 6 + 90 x 7 + 145 x 8 + 150 x 9 + 55 x 10 = 4050
If you add up all the adults, you have 500.
Dividing 4050 by 500 = 8.1
Sample B will produce a very similar result.