Respuesta :
Answer:
D. 266
Step-by-step explanation:
I want to start off first by giving the definition of "mean". A mean is the average of the set of data given. To do this one must add the data all together. HOWEVER (this is important)! Once you added the data you must divide the sum by the number of data there is given.
- For example, if you are given 5, 10, 15, 20. The sum would be 50. You divide 50 by 4 because we are given four numbers of the data set. That then equals 12.5
So the problem we are given is to find the mean of the data set : 283, 351, 131, 235, 298, 192, 341, 306, 261
Step 1:
- We are given the data, so let's add them all up to get the sum
283+351+131+235+298+192+341+306+261 = sum of the data set
283+351+131+235+298+192+341+306+261 = sum of the data set
1000+298+192+341+306+261 = sum of the data set
1000+831+306+261 = sum of the data set
1000+831+567 = sum of the data set
1000+1398 = sum of the data set
2398 = sum of the data set
- The last thing we need to do, is take the sum and divide it by the amount of numbers we have in the data set. So we have 9 numbers in the data set.
mean =[tex]\frac{2398}{9}[/tex]
mean= 266.44...
For the answers, there is no 266.44... choice, but the closest answer we have that is similar to what the answer we got is D. 266.
Answer:
Its 266.
Step-by-step explanation:
You gotta add 283 + 351 + 131 + 235 + 298 + 192 + 341 + 306 + 261
and it equals 2398.
then do 2398 divided by 9
and that equals 266.444...(you know what I mean cuz)
And round it off to 266.
